CSET Subtest 2 Q/A Graded A+!!!

CSET Subtest 2 Q/A Graded A+!!! CSET Subtest 2 Q/A Water cycle What does X represent? - ANS Condensation Rain drop and gravity-which direction will it fall? - ANS SLIGHT RIGHT Why does the ocean not freeze as fast as a lake? - ANS (Salt water freezes at a lower level temperature) The answer also has ice crystals in it. What would happen if a plant was watered with ocean or salt water? - ANS If a plant is watered with salt water it will wilt, if too much water is lost during osmosis the plant will die. What are the folds of the long digestive system for? s - ANS To increase surface area over which the nutrients can be absorbed From the Northern Hemisphere, what place would experience the longest amount of daylight? ( - ANS Anchorage, Alaska What are mutations? - ANS Variations and survival are choices. Polaris View - ANS Polaris is known as the North Star, since it is directly located above Earth's North Pole: The stars circle around it, it does not move, northern direction, Earth rotates Compared to the waters of the continental shelf, the surface waters of the open ocean are generally much less productive because they? - ANS Lack of nutrients derived from the land or ocean sediment on the sea-bed. Which is the best example of physical weathering? - ANS Key Words: Frost in granite or rock (something like that) The sentence has "Ice Crystals" in the answer Function of a cell. A question about what is produced in the nucleus: - ANS RNA molecules are synthesized from DNA template Questions on photosynthesis (what is the best example of photosynthesis or something) - ANS The answer is something like plants take in carbon dioxide and water to create glucose and o2. Question about a little boy making a model of an atom, what would be the most accurate - ANS having the protons and neutrons in the nucleus. (same wording as the test) In the Northern Hemisphere, on a day in the winter solstice, which place experiences the longest amount of sunlight - ANS Ross Ice Shelf, Antarctica (24 hours) ← southern hemisphere, winter solstice JUNE 1 Members of what group act as Decomposers? - ANS Fungi 16.Renewable energy, what starts as kinetic energy then goes to electric energy? - ANS A: Windmill (same wording as test) (movement-related = Windmills moving) Which of the following changes is an example of natural selection? - ANS The percentage of beetles that are genetically darker in color increases in populations that expand from prairie into forest. During the N. Hemisphere winter, the sun's path across the sky is shorter and closer to the horizon than it is during the summer. This seasonal change in the sun's path across the sky is caused by... - ANS Tilt of Earth's rotational axis compared to its orbital plane. (SAME WORDING ON TEST) Question & image above was reported on the test. Test taker said they put 8 pm—the question had an X and a y marked on the globe. It said if x (or A on pic) has the sun directly overhead and each 15 degrees in longitude is equal to 1hr, what time is it in Y? Just remember 8:00 pm, letters can vary! - ANS 8PM Something with two flasks - ANS Thermal Conductivity NOTE: This is the same question as the drawing at the end of the science doc. This doc says thermal, but a science teacher said it was densities, which would make sense with how the question is worded. Boiling points did not make sense. What are separation techniques for sodium chloride and sodium nitrate(v) - ANS Answer**To separate these salts, you can Key: add water to the mixture to dissolve the sodium nitrate & reclaimed by evaporation afterwards.. Silver chloride is not soluble in water, so it will not dissolve. The solid can be removed from the solution by gravity filtration (the equivalent of a coffee filter) How is wind formed? - ANS Uneven heating of the earth's surface by the sun Man leaves work and walks to a sandwich shop. He talks with the employee and then walks back to a park bench by his work. Man sits on the park bench to eat his lunch and heads back to work. What graph best reflects his action.Which graph represents - ANS displacement vs. time) Northern hemisphere and winter, I cannot recall the exact question (Position of is in the northern hemisphere during the winter solstice - ANS Earth's poles is most tilted away from the sun Which of the following statements about requirements of all living things are true? - ANS All living things need liquid water to distribute nutrients and waste within cells and throughout the body. (SAME WORDING AS THE TEST) N temperature region which marine environment temperature exhibits highest levels of biological productivity?(worded differently) - ANS Estuaries Why is iridium so rare on Earth? Why iridium is only found in the layer of the earth that dates to when the dinosaurs went extinct : - ANS Earth has been impacted several times by meteorites In the study of evolution which of the following statements would most accurately assess the significance of the bone shown? (Human + whale) bats + cats - ANS Same Ancestry Why the graph (shown below) showed an increase and decrease in population and size the answers were worded differently. - ANS . Smallest and largest CAN AVOID PREDATORS Question on transpiration, it asked what would affect transportation from occurring - ANS Humidity A hot spot in the ocean can cause: - ANS new volcanic islands Question about what is in the head of a comet - ANS Ice and dust Life cycle of a butterfly. This question is a picture of the butterfly cycle. - ANS Missing the chrysalis El Nino's effects on seagulls/fish/fisheries (warms the water) - ANS No phytoplankton- It disrupts the whole food chain- warm waters In the Northern Hemisphere, on a day in the winter solstice, which place experiences the longest amount of sunlight - ANS Ross Ice Shelf (exact wording on test) Measuring air pressure can help with predicting what? - ANS Extreme weather conditions Which of the following is indicated by the size of the minerals in an igneous rock sample? - ANS How long the rock took to cool as it formed What is the biggest problem for endangered species today? - ANS Deforestation or destruction of habitats An electrical battery is made with a magnet. The ​coil​ is turning because...looking at the images....? - ANS attraction/repulsion between the magnetic field and the free electrons Students conducting a science experiment with sugar cubes in water vs. crushed sugar in wate​r. - ANS surface area of solute What is the biggest danger for the reason of loss of plants and animals? - ANS Destruction of their habitat What causes tectonic plates to move? - ANS an option for ​convection and heat from the mantle​. How would you describe the milky way - ANS A flat central disk with rotating spiral arms. Which of the following is indicated by the size of the minerals in an igneous rock sample - ANS How long the rock took to cool as it formed What is a good conductor of electricity - ANS Copper How many boxes 24in x 12in x 12in can fit in a crate 8ft x 6ft x 6ft - ANS 144 How many calories can burn in 1 hour You are doing 1 session of work out. You jogged 2/3 of the session at 6 miles per hour. You burn 120 calories per mile you jog. You walked 1/3 of the session at 3 miles per hour. You burn 100 calories per mile you walk - ANS 580 calories in 1 hour One million students: 2% of them are gifted, 80% of them received their bachelor's degree and 80% of them receive their masters. What is the percentage of gifted students receiving their Masters? - ANS 12,800 students A table with 6 chairs, and they ask what the formula would look like if they kept adding more tables - ANS C=4t+2 What is the probability of one of the coins landing... at least 1 head?A coin is flipped three times - ANS Answer: ⅞ What is the probability of getting exactly 2 heads or 2 tails? - ANS Answer: ¾ (reduced from 6/8) A calculator shows 4.21e-18. What does this represent? That it's a scientific notation? - ANS 4.21 x 10−18 I drew up a rough image of the question, but they ask, "Find the mean" so learn how to do the mean when using a bar graph (ADD all the numbers and divide by how many products) - ANS ANSWER: 55 Bars are at A rough drawing of what I remember but know what the red lines are half way between two lines - ANS For me, the number line had the letter "A" close to the number 3. The question asked which of the numbers below was the letter "A"...(Something like that) I chose the square root of 8 as the answer. (same) b) 13/8 = 1.62 ¾ + ⅖ but they want the numerator in simplest form. - ANS *They want simplest form* I got ¾ + 2/5 = 23/20...Which can be reduced to simplest form of 1 & 3/20 & that's why a= 3 b= 20 answer is 3 for a Equation: Y= 9 -x2 Note: Answers may vary depending on what numbers you choose The question on the test was a parabola facing downwards. Asking for point A and B. - ANS Two questions: Answer -What is Point A? (-3,0) Answer- What is Point B? (0,9) Teacher has 64 pounds of clay, 3 classes of 27, how much clay will she give each person? - ANS 64 pounds ÷ 81 students .79 lbs Find the missing angles of diagram below - ANS Answer is 118 degrees You'll see a graph and the question will ask "which point touched the x-axis - ANS x-axis" (6,0) Another graphing question. - ANS Explanation: Up 2, across 3 **Might be asking for rise over run** Spinner question: guessing when it will land on number 3 - ANS A) There are three pie "slices" that are labeled 3. There are 12 slices in total. Thus, the answer is 3/12, which can be simplified to 1/4 you have $6000 total and the questions shows a pie chart. Money is spent, travel expenses are 30% of 6,000=1800. Then parking is like 10% so you need to find whats .10 of 1800 - ANS $180 Circumference question: radius was 6- Asked for the diameter/radius) - ANS C=2πr i.e. If r = 6, then C= 2π 6 C= 37.699; Someone said the answer is 12. It was presented as points on a graph. The center of the circle was (3,5) and one of the points was (9,5) what is the diameter? That would mean r = 6 and d = 12 *Answer* Find the Perimeter of ONE circle. Perimeter of the triangle is 60cm (only measurement given) - ANS Answer: 62. 8 (Confirmed) This one asked about insulation needing to go around this object. It is ½ thick. If it's $3.60 how much will it cost? - ANS Answer: 6,000 2(80 x6) + 2(80 x 4) + 2(6x4) = 1648 x 3.60 = 5932 960+ 640 + 48 = 1648 then times 3.60 = $5932 Or 2(80 x6) + 2(80 x 4) + 2(6x4) = 1648 x 3.80= $6262.4 .Decimal 0.0a49ba. Round to the nearest ten thousandths - ANS Answer: 0.0a50 There are 1,200 students at ABC high school. 56% of the students are either in 9th grade or 10th grade, of the remaining students ⅓ are in the 11th grade. How many students are in the 12th grade? - ANS Population of students for 1st version: 672=9 and 10 grades 400 =11 graders 128=seniorsHigh school question: 56% are 9 and10 graders Another ⅓ are 11 graders. How many of the remaining students are 12 grades? 2 versions with different answers 35 First way: interpreting "another" ⅓ of the entire population (1200) 1200 x .56= 672 Then, ⅓ of 1200 = 400 Final step, add 672+400=107 Total 1200 students Second version: interpret "another" as referring to ⅓ of the 9th and 10th graders (672) 1200 x .56=672 1200-672= 528 ⅓ of 528=176 672+176= 848 1200-848= 352—-5/20/20 Population of students for 1st version: 672= 9 and 10 grades 176=11 graders This is the answer!!! 352=12 ** Total: 1200 students Book cover problem. find the area of a book cover and the shape is an irregular shape. - ANS Answer 111CM^2 - this is the answer with the numbers in the test. the option on my exam only had 111 no square on any of the option What point could be on this line and they give you a graph image and a line going through it - ANS ANSWER (4,9) you'll see a picture of a trapezoid and the question wants you to find the AREA of ONLY THE TRIANGLE... ½ b x h. - ANS area of triangle only= 4 03/263/303/30,3/314/5 Answerif it's asking the area of the entire figure: 24 This question provides this image and you have to find formula that goes with it: 3/23 3/22 3/243/253/263/303/30,3/31,4/1 4/24/24/54/6 4/6 The amount of dots was like: 2 5 8 11, the answers below are not correct but were one of the options. You can solve this problem by putting the number of sections instead of n in the formula and seeing if it matches the number of dots. - ANS 3n-1 The question is giving you (7/3)+4 - ANS (7x3) - 4 3/30,4/14/2 4/5 but it asked for inverse additive which is -(7/3)-4 . 2•2•2•2•y•y•y•y question said to solve this or rewrite it - ANS A) 16y4 *Answer if it is asking you to solve* B)2y^4*Answer if it is asking you to rewrite* What is the transformation of L when Rotated?(something like that but look for an L shape on a graph) - ANS A) Answer: It's rotated over Y Axis "If the average number of cars sold in the first 5 months was 56, and the mean for the first 6 months was 63, how many cars did they sell in the 6th month?" - ANS A) 98 CARS Had this question, but with this different set of numbers. However, the answer below was to calculate the median - ANS a. The standard deviation b. the mean c. the median - this is the answer This answer is correct d. the range 3 yellow paper clips, 4 green paper clips, and 7 blue paperclips. What are the chances that you will randomly get a yellow or green paperclip? - ANS Answer 50% A chart about Kayaks and how much shipping you need to charge. The main thing to know is that 1 foot = 12 inches. Super simple question. You add the shipping charge (once you find it on the chart) and the price of the kayak.*Look at both charts**** the 1st chart tells you about a 9 foot kayak, then the weight of it...***2nd graph how much for the weight - ANS I got the answer of $524 to ship the kayak in the mail. You must add the shipping cost of the kayak with the price of the kayak. There was a question with a chart with students, children and adults watching movies in June, July and August and had three questions about who had watched a greater number of movies in June.... Can't remember exactly - ANS Children bought more tickets in June and July than adults A student put a rose under blue light and the rose appears black. Student places rose under red light and it appeared red. Explain this student's conclusion using the laws of physics and color. - ANS You think the red rose is red because when white light falls over the rose it absorbs all other colors other than red and emits red light. When blue light falls over the rose it absorbs the blue light, but there is nothing to emit so it appears black. When white light shines on a red object, all of the colors that form the white light are absorbed except red, which is reflected. This is why the object appears red. A filter is a transparent material that absorbs some colors and allows others to pass through. Light is the only source of color. Color pigments (paints, dyes, or inks) show color by absorbing certain parts of the light spectrum and reflecting the parts that remain. Color filters work the same way, absorbing certain wavelengths of color and transmitting the other wavelengths. When blue light is allowed through a blue filter onto a blue object, the object will still reflect blue and therefore appear blue. But when blue light from a blue filter hits a red object, the blue will be absorbed and no light will be reflected, giving the object an appearance of being black. Another possible response: -Evaluate the student's validity This student's conclusion may not be valid because the student never looked at the rose under white light. The student's explanation also showed misconceptions about the physics of color. -Evaluate the student's scientific procedure Since the student only used two colors of light, the student cannot accurately conclude the color of the rose. Most objects reflect a spectrum of colors. When white light shines upon them, they appear to be the color that is reflected the most by the object. The student should look at the rose under white light to determine its color. -List another reason using physics to determine why the rose changes color under certain lights: The colors we see are the color CR 2 What scientific procedures can students take to find the volume, density and mass of their mineral samples? What tools can they use to measure all those? Finally, design an experiment to find the information to the answer - ANS The tools necessary to measure the mass, volume and density of their mineral samples include a scale and a graduated cylinder. To find the volume and mass of their mineral samples the students need to use the water displacement method. By finding the mass then dividing that by the volume of water displaced, you can calculate the density of minerals and other irregularly shaped objects. The formula used to find the density is D = m ÷ v. For this experiment I will need: a graduated cylinder, water, minerals, paper, and a pencil. To set up this water displacement activity, fill the graduated cylinder with water to the desired mL. Write on a piece of paper the milliliters of water you filled the graduated cylinder to. Now take your first mineral and gently set it in the graduated cylinder. On a paper, mark what the water level went up to once the mineral was inserted into the graduated cylinder. My water displacement experiment will involve coins. Organize the coins by size and line them up in the proper sequence. Make a chart on paper of the different sizes of coins you'll be using for this water displacement experiment. Start by gently dropping dimes into the cup of water from a very low height one at a time. As each coin gets added to the water, the water will naturally rise as space inside the cup is becoming occupied by the coins. For example, if the initial water level is 60ml or 60cm3, when the coins are added the final water level is 72ml or 72cm3. The next step is to subtract the initial water level number of 60ml from the final water level of 72ml you now have a volume of 12cm3. Another possible response (doesn't include experiment): To identify the mass of each object, students should use an accurate scale, being careful to calibrate the scale so it weighs only the object and not its container. To identify the CR 3 A dripping faucet in a tank/bin: You have a rectangular prism. The dimensions are 12" (L) x 16" (W) x 8" (H). After 8 hours it fills to 6 cubic inches. What formula would you use and how long would it take to fill it up completely? - ANS The formula for this problem is cubic inches/hours = volume = (L)(W)(H). The first step is to calculate the volume of what is already filled over the amount of time it took to fill it. 12 x 16 x 6in3/8hours = 1152 in3/8hours = 144 in3 per hour. The second step is to calculate the total volume of the tank. 12 x 16 x 8 = 1536 in3 Finally, we divide the total cubic inches of the tank over the cubic inches per hour. 1536in3/144in3 per hour = 10.67. .67 of an hour is about 40 minutes which leads to a total of approximately 10 hours and 40 minutes to fill the tank completely. Question: In Eddie's video the second portion of this question was stated as "How long will it take to fill the container the rest of the way?" Here are the steps I took: please tell me what you think? Find the volume of the filled portion on the container. v=(l)(w)(h) , v=(12)(16)(6" cubed). Volume is 1,152 cubic inches. Then create a ratio of 1,152 cubic inches over the time it took to fill the container so far. The ratio is 1152/8hrs= 144cubic inches per hour to fill the tank so far. To find out how long it will take to fill the rest of the container we need to find the volume of the empty part of the container: v=(12)(16)(2), v= 384cubic inches Create a proportional ratio to find the missing time value=x. 144 cubic inches/1=384 cubic inches/ x; cross multiply= 144x=384; solve for x= 2.7 hours to fill the rest of the container. Building town hall: The cost of labor is $80 per sq. ft. and the materials or land cost $60,000. How many sq. ft. can the new townhall be if the budget is $260,000? ***WILL ASK YOU TO GRAPH YOUR POINTS. This is a three-part question. The first part is to find the equation that you would use for the $80 and the 60,000. Then make a graph with all the points and AXIS' says labeled. After this use the $260,000 and set it equal to the 80X+60000 equation.*** 03/19, 3/26, 4/1 - ANS This being a linear situation, it can be modeled with the linear equation y=mx+b to set up the problem. When setting up I know that the $80 is my rate because it will change depending on the number of square feet. My y-intercept is 60,000 because it is my starting point. To figure the square footage based on the numbers provided I've set up my equation as 260,000=80x+60,000. Once the equation has been set up, I subtracted 60,000 from both sides. Now I'm left with 200,000=80x. Finally I divide both sides by 80 leaving me with x=2500sq ft. And so, to build a house (or town hall) on a $60,000 lot at $80 per square foot my new town hall would be 2,500 sq. ft. This graph could be a little more evenly divided on the x and y axis, but here's a sketch: WWhy do they get pushed back by 50 minutes on a daily basis? Give an example of a geographical factor that would cause a higher tide on a coastal location that causes ocean tides? - ANS The big three factors that create the tides are; the moon, the sun and the earth. The gravitational pull of all three bodies interacting creates the tides. The biggest factor is the moon. It exerts about 2.2 times the power on the tides than the sun does. With each passing day the tides occur about an hour later than the previous day because the moon rises about an hour later each day, (actually, 54 minutes later). Since the moon's gravitational pull raises the tides these two delays are connected. When the sun and the moon are in alignment, the sun enhances the moon's gravitational pull creating higher tides than normal called spring tides. This happens on a full moon or a new moon. Geographical factors include continental land masses that disrupt the normal, semidiurnal wave pattern (two high and low tides per day). The example I gave was the Gulf of Mexico because it's separated from the open ocean on the west by Central/South America, in the center by Cuba, and in the East by the Floridian peninsula. This causes the coastal regions of states like Texas, Louisiana, Mississippi, Alabama, and the west coast of Florida to have a diurnal wave pattern (only one high and low tide per day). Paramecium—Discuss the increase and decrease of the paramecia. What types of methods could be done to provide evidence of the increase or decrease after five days? What would happen if a predator were added to the paramecia? What effects would it have on the paramecia and the chart? - ANS the first part asked for conditions in which the following trends can happen (not exact wording but similar). The paramecia multiplied and became more and more (graph goes up). Soon the paramecia didn't have enough resources or food to survive so they started to die out (graph goes down). Types of methods: count the number of paramecium to see if they multiply. Or look at the density of the paramecium through a microscope to see if it gets bigger. The patterns of population are dependent on factors of carrying capacity, limited factors of resources for an organism to live, and patterns of population growth. These patterns include changes in food, water, disease, temperature, crowding/competition and predator-prey relationships. By adding a predator it would cause the chart to decrease because it would eat the paramecium. Find the height of the flagpole when the base is 15 meters, the height of a man is 1.5 meters, and the direction of the shadow is out 3 meters. 5/15: I got this one.4/6 4/6 OR A man that is 6ft tall has a shadow that is 8ft long. His shadow and a nearby tree's shadow (80ft) meet at the same point. How tall is the tree? 4/2, 4/5 - ANS The shadow creates two similar triangles. If there are similar triangles we also know that they are proportional to each other. This equation requires knowledge of proportional relationships and the use of cross multiplication. First I pulled the triangles apart creating two separate triangles. The base of the bigger triangle is 15 ft. and the height is still unknown. Now for the second triangle its base is 3 ft. and the height is 1.5 ft. Now to set up my proportion which is x/15=1.5/3. At this point I then cross multiply giving me 3x=22.5 at which point I divide both sides by 3 leaving me with x = 7.5 as the height of the flagpole. A/B=C/D and cross multiply AxD=BxC and solve for x. . Probability of two dice with 6 sides: What will be the probability of the absolute difference if dice 1 and dice 2 is 3? What is the probability if dice 1 has a greater number than die 2? What is the probability of the sum of die 1 and die 2 with even numbers? - ANS Note:the second question sounded like: the player would get a second roll if one dice is greater than another. What is the probability that a player gets a second roll; and What is the probability that after a player gets a second roll his first roll and the second roll both have a sum which is an even number. When working with probability questions, the first step is to determine the total possible outcomes. A chart can be a great visual strategy to assure thoroughness. Once the probability chart is ready, we find that there are a total of 36 possible outcomes when rolling two dice. Next, we determine the probability of the following instances: a) P = | Dice 1 - Dice 2 | = 3 6/36 = There is a 16% chance that the absolute difference of Dice 1 and Dice 2 will be 3. b) P = Dice 1 Dice 2 and P = Second Roll if Dice 1 Dice 2 15/36 = There is a 41% chance that Dice 1 will be larger than Dice 2. 15/36 = ½ * ½ = ¼ = There is also a 25% chance that you'll get a second roll because Dice 1 will be larger than Dice 2. c) P = Dice 1 + Dice 2 = even # 18/36 = There is a 50% chance that the sum of Dice 1 and Dice 2 will be an even number. Converting these probabilities to percentages make