- Study guides, Class notes & Summaries

Which of the following is totally a longitudinal wave? a) Water b) Sound c) Light d) Electromagnetic e) Laser B) Sound Which part of a sound wave is related to its loudness? a) amplitude b) frequency c) wavelength d) speed e) velocity A) Amplitude Bats navigate by emitting high pitched sound waves and a) killing all the moths C) Listening for an echo within 10 meters. b) attracting various insects toward the sound. c) listening for an echo. d) calculating wave crests p...

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14 pages

Written in 2023/2024

Grade A

STUDYFIELD

Biology - ANSWER-The study of life and living things cell membrane - ANSWER-the structure that separates the inside of the cell from the outside of the cell Cells - ANSWER-the basic units that make up all living organisms Chloroplast - ANSWER-the organelle in plant cells that capture energy from sunlight to build organic molecules Chromosomes - ANSWER-DNA containing structures in prokaryotic and eukaryotic cells Cytoplasm - ANSWER-the part of the cell that is outside the nucleus DNA - ANSWER-deo...

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6 pages

Written in 2023/2024

Grade A

STUDYFIELD

Earliest life forms trace back to - ANSWER-4 billion years ago Earth's early atmosphere - ANSWER-Reducing and lacked oxygen A.J Oparin's hypothesis - ANSWER-Earth's reducing atmosphere plus cooling and lightning storms resulted in primordial soup where organic molecules could be formed S. Miller and H. Urey's experimentation - ANSWER-Water paired with methane and ammonia gas and created a spark; when cooled, the mixture produced amino acids S. Fox experiment - ANSWER-Amino acids ...

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26 pages

Written in 2023/2024

Grade A+

lectknancy

Know the characteristics of pseudoscience. - ANSWER--Things presented as science, but which do not meet scientific standards -Conclusions are not derived from valid empirical data -Contradict currently accepted theories -Fake science Know the characteristics of pseudoscientists. - ANSWER--Typically have little scientific training -Have a flawed comprehension of the scientific area -Skip the peer-reviewed process when presenting ideas -Gather support from newspapers, ancient mythological...

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3 pages

Written in 2023/2024

Grade A+

lectknancy

Nutrient - ANSWER-The important parts of food that living things need for energy and good health Diet - ANSWER-The food that people eat on a daily basis Food groups - ANSWER-The main types of food Carbohydrate - ANSWER-A food type that gives energy to living organisms Protein - ANSWER-A food type need for the growth and repair of the body Fats and oils - ANSWER-A food type that supplies a large amount of energy vitamins and minerals - ANSWER-Parts of food needed to keep bodies ...

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3 pages

Written in 2023/2024

Grade A+

lectknancy

Which disease is NOT genetically inherited (A) Tuberculosis (B) Phenylketonuria (C) Huntington disease (D) Cystic fibrosis (E) Tay-Sachs disease - ANSWER-(A) Tuberculosis Which disease can be controlled merely through regulation of diet (A) Tuberculosis (B) Phenylketonuria (C) Huntington disease (D) Cystic fibrosis (E) Tay-Sachs disease - ANSWER-(B) Phenylketonuria As a direct result of photosynthesis, energy is stored in molecules of which of the following? (A) RNA (B)...

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16 pages

Written in 2023/2024

Grade A+

lectknancy

independent variable - ANSWER-variable being manipulated dependent variable - ANSWER-thing we are measuring experimental group - ANSWER-group that receives the manipulation control group - ANSWER-does not receive the manipulation operational definition - ANSWER-the measurable definition problems with designing questionnaires - ANSWER-multi faced questions, biased wording, being too vague, too long impersonal; cannot prevent untruthful answers; confined by offered options quest...

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2 pages

Written in 2023/2024

Grade A+

lectknancy

Independent Variable - ANSWER-The thing in an experiment that changes Dependent Variable - ANSWER-The thing that is affected by the independent variable Controlled Variable - ANSWER-The things in an experiment that stay the same Producer - ANSWER-Make their own food Omnivore - ANSWER-Animals that eat plants and animals Herbivore - ANSWER-Animals that eat plants Carnivore - ANSWER-Animals that eat other animals secondary consumer predator and scavenger Consumer - ANSWER-Org...

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15 pages

Written in 2023/2024

Grade A+

lectknancy

Biology - ANSWER-The study of life and living things cell membrane - ANSWER-the structure that separates the inside of the cell from the outside of the cell Cells - ANSWER-the basic units that make up all living organisms Chloroplast - ANSWER-the organelle in plant cells that capture energy from sunlight to build organic molecules Chromosomes - ANSWER-DNA containing structures in prokaryotic and eukaryotic cells Cytoplasm - ANSWER-the part of the cell that is outside the nucleus ...

5.0

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5 pages

Written in 2023/2024

Grade A+

lectknancy

Which of the following is totally a longitudinal wave? a) Water b) Sound c) Light d) Electromagnetic e) Laser - ANSWER-B) Sound Which part of a sound wave is related to its loudness? a) amplitude b) frequency c) wavelength d) speed e) velocity - ANSWER-A) Amplitude Bats navigate by emitting high pitched sound waves and a) killing all the moths within 10 meters. b) attracting various insects toward the sound. c) listening for an echo. d)...

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13 pages

Written in 2023/2024

Grade A+

lectknancy

When two atoms link up we call that - ANSWER-a chemical bond the most stable configurations of electrons occur in which of the following cases? - ANSWER-elements that are inert gases in many instances, the formation of a chemical bond leads to which of the following cases? - ANSWER-a configuration in which electrons rearrange in favor of least energy the spontaneous formation of new chemical bonds usually leads to the emission of energy in the form of heat because of which of the follow...

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6 pages

Written in 2023/2024

Grade A+

lectknancy

What about alternatives to fossil fuels? - ANSWER-Neither the availability or cost of fossil fuels, nor the upfront cost in public opinion of nuclear fuel, look very promising solar energy - ANSWER-energy that comes from the sun Used by the Greeks 2000 years ago and the Anasazi Indians of the desert Solar energy technologies - ANSWER-There are some interesting solar technology such as solar furnaces and photovoltaic cells- Then silicone we first which admit electrons in produces electricit...

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9 pages

Written in 2023/2024

Grade A+

lectknancy

What are the 4 basic methods that humans have for "knowing" things? - ANSWER-1. Personal Experience/Trial and Error 2. Oral Tradition 3. Written Communication 4. Modern Scientific Method Oral Tradition - ANSWER-The passing of information that allows new techniques to be developed Example for basic method #2: Oral Tradition - ANSWER--Stories around the campfire -Cave paintings/pteroglyphs: considered the bridge between oral and written communication, but designated oral communication ...

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12 pages

Written in 2023/2024

Grade A+

lectknancy

Proton - ANSWER-positive charge Electron - ANSWER-negatively charged particle Neutron - ANSWER-no charge Neucleus - ANSWER-Center of an atom Melting - ANSWER-solid to liquid Evaporation - ANSWER-Liquid to gas Condensation - ANSWER-Gas to liquid Freezing - ANSWER-liquid to solid Crystallization - ANSWER-gas to solid Sublimation - ANSWER-solid to gas Periods - ANSWER-Horizontal rows on the periodic table Groups - ANSWER-Vertical columns on the periodic table Mol...

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2 pages

Written in 2023/2024

Grade A+

lectknancy

Water - ANSWER-most abundant substance on the SURFace of the planet oceans cover 70% of the planets surface Why is water important? - ANSWER--Maintains climate -Dilutes pollutants -Essential to ALL life - Most living things are composed by water (weight) Trees-60% Most animals/humans 65-70% Surface Tension - ANSWER--observed by the "skin" that forms on the surface of water due to molecular bond (STICKINESS) - water striders and spiders can travel on this Capillarity - ANSWE...

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11 pages

Written in 2023/2024

Grade A+

lectknancy

control variable - ANSWER-In an experiment of or set of compared observations, a variable that does not differ between control and test groups. controlled experiment - ANSWER-Test group compared to a control, or unaltered, group. data - ANSWER-Recordable observations or measurements. deductive reasoning - ANSWER-Using general principles to infer answers to specific questions. dependent variable - ANSWER-Measured results of an experiment; result of the effects of the independent varia...

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15 pages

Written in 2023/2024

Grade A+

lectknancy

What 3 ways is temperature measured in? - ANSWER-Fahrenheit Celsius Kelvin Fahrenheit: A. Water freezes at ____ degrees B. Boils at ____ degrees C. Average body temperature is ____ degrees - ANSWER-A. 32 B. 212 C. 98.6 Celsius: (centigrade) A. Water freezes at ____ degrees B. Boils at ____ degrees C. Average body temperature is ____ degrees - ANSWER-A. 0 B. 100 C. 37 Kelvin: A. Water freezes at ____ degrees B. Boils at ____ degrees C. Average body temperature is ____ deg...

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9 pages

Written in 2023/2024

Grade A+

lectknancy

Which of the following would cause a high angle of reflection of a light wave? (a) high angle of incidence of the wave (b) a low angle of incidence of the wave (c) a wave that travels through a medium of higher density (d) a wave with a very short wavelength - ANSWER-(a) a high angle of incidence of the wave What term is used to describe two waves that are out of phase as they come together to produce a new wave? (a) incomplete interference (b) distorted interference (c) construct...

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12 pages

Written in 2023/2024

Grade A+

lectknancy

Steps in the scientific method - ANSWER-1. Make an observation and describe it 2. Form a question 3. Make a prediction and create a hypothesis 4. Plan and conduct experiment to test hypothesis 5. Gather data and analyze results 6. Draw Conclusions What is scientific explanation - ANSWER-how or why something is the case. They are often identified with causes. What are two basic ways theories differ from hypotheses? - ANSWER-One difference is that a hypothesis can be anything from a va...

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8 pages

Written in 2023/2024

Grade A+

lectknancy

What must be true about a scientific hypothesis? - ANSWER-Hypotheses must be falsifiable. What is important for the formation of scientific hypothesis? - ANSWER-Creativity and cooperation. What correctly describes a theory? - ANSWER-A group of well tested hypotheses that provide evidence to support explanations for scientific phenomena. Statement that accurately describes the purpose of the scientific method? - ANSWER-To provide a systematic way for obtaining evidence to support or refu...

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15 pages

Written in 2023/2024

Grade A+

lectknancy