AFOQT Test Questions with Correct Answers

AFOQT Test Questions with Correct Answers Mark is trying to move a 180 lb box with a 7 ft long plank of wood. He puts a pyramid￾shaped block under the plank for it to pivot on. How much force must he use to move the box if it is 2 feet away from the block? - Answer-72 lbs. Migra is the root word for: - Answer-wander Heather and Joan are sitting on a seesaw which is balanced. Heather weighs 140 lbs and Joan weighs 107 lbs. If Joan is seated 5.5 feet away from the pivot of the seesaw, how far away is Heather from the pivot? - Answer-4.2 ft Mark is trying to move a 180 lb box with a 7 ft long plank of wood. He puts a pyramid￾shaped block under the plank for it to pivot on. How much force must he use to move the box if it is 2 feet away from the block? - Answer-72 lbs Lisa weighs 98 lbs and sits 3.5 feet away from the fulcrum of a seesaw. Her friend Kelly weighs 83 lbs. How far away from the fulcrum must Kelly sit for the seesaw to be balanced? - Answer-4.1 ft Kyle placed 3 jars weighing 20 kg, 14 kg and 5 kg on one side of a metal plank 3 ft, 3.8 ft and 4.2 ft away from the fulcrum respectively. How far should he place a 31 kg bag of sugar from the fulcrum so that the plank is balanced. - Answer-4.3 ft If the circumference of a screw is 3.5 inches, what is its diameter? - Answer-1.1 inches On a screw that has a circumference of 2.5 cm, there are 7 threads per inch. What is the mechanical advantage of the screw? - Answer-17.5 which of the following statements is false? - Answer-A two-stroke engine has low torque compared to a four-stroke engine. In this type of engine, the intake and exhaust functions occur at the same time. - Answer-two-stroke A ___________ functions by forcing extra compressed air into the combustion chamber. - Answer-turbocharger What does the word 'ABJECT' mean? - Answer-hopeless At night, airport taxiways are identified by omnidirectional edge lights which are _________ in color. - Answer-blue An airplane's thrust is opposed by ________. - Answer-drag 3 Different Categories of Rocks - Answer-Sedimentary: Formed of pebbles, sand, shells, and other sediments. Formed by accumulating layers that form and fuse together over long periods of time. (Examples: Limestone, Shale, coal) Metamorphic: Rocks usually found below earth's surface. Very hard & have ribbons of colors in the layers. (Example: Slate and marble) Igneous: Formed by hardening of molten magma from deep within Earth as it cools. Can be shiny & smooth or bumpy & rough from gas bubbles erupting as it cooled slowly. (Example: Granite, pumice, basalt, obsidian) Precambrian Era - Answer-Beginning age cannot be defined for certain, but ended approximately 542 million years ago. About 90% of Earth's history occurred in this time. Paleozoic Era - Answer-the part of geologic time 570-245 million years ago ; invertebrates, fishes, amphibians, reptiles, ferns, and cone-bearing trees were dominant Mesozoic Era - Answer-middle life (245-144 million years ago); rise of mammals and dinosaurs; the rise of birds; extinction of dinosaurs, rise of flowering plants Cenozoic Era - Answer-era that began about 66 million years ago, known as the "Age of Mammals" atmosphere - Answer-The atmosphere of the Earth is the layer of gas that surrounds the earth and is kept in its place by gravity. Also protects us from radiation. Dry air is made up approx. of 78% nitrogen, 21% oxygen, with remaining 1% including argon, carbon dioxide, and a few other gases. There are 5 main layers of the atmosphere. Exosphere - Answer-700 to 10,000 km (440 to 6,200 miles) Uppermost layer of the atmosphere, it merges with empty space where there is no atmosphere. Molecules of gas are so far apart that they may be miles away from each other. Thermosphere - Answer-80 to 700 km (50 to 440 miles) This layer is still far, in fact the space station is in this layer. Temperatures are extreme (2,700 F) however the molecules of gas are so far apart that the temp. would feel cold. Mesosphere - Answer-50 to 80 km (31 to 50 miles) This layer is where most meteors burn up, making them visible to the naked eye. Clouds can form here, but are difficult to see. Temps get as cold as -120F. Stratosphere - Answer-12 to 50 km (7 to 31 miles) Due to the lack of weather patterns, few clouds form here. This is the highest altitude in which jet airplanes can fly. Temp's can range from 32F - 76F) Troposphere - Answer-0 to 12 km (0 - 7 miles) The lowest layer, extending from earth's surface. This is where the clouds and weather patterns form, and temperatures are generally stable. stratus clouds - Answer-look like flat blankets and are usually the lowest clouds in the sky cumulus clouds - Answer-are white, puffy clouds that look like pieces of floating cotton. The base of each cloud is flat and the top of each cloud has rounded towers.They turn dark when rain is coming. cirrus clouds - Answer-Wispy, feathery clouds made of ice crystals that form at high levels. warm front - Answer-When a warm front moves through, it rides up and over the top of the colder air and clouds. Result is precipitation in the form of rain, sleet, snow, or hail. cold front - Answer-cold air moves in and overtakes the warm air. Thought there might be some precipitation right before the front moves through, there is usually no rain accompanying a cold front. (Cold front causes sudden drops in temp) The Hydrologic Cycle - Answer-Simply the movement of water on Earth. This cycle includes all forms of water (Solid, liquid, gas) & it has 4 main stages: Precipitation, Run￾off and Collection, Evaporation, Condensation. The Sun - Answer-It is a yellow dwarf star. Despite its enormous size compared to the Earth (100x diameter) it is small compared to other stars. Approx. temp. of the Sun is 11,000F (6,000) C. The core is assumed to be 15,000,000 C. The Sun is dense, compromised of plasma that produces energy from atomic reactions in the core. The sun accounts for 99.99% of the mass in our solar system because it is so dense! The Planets - Answer-Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune. (My very education mother just served us nachos) 4 terrestrial planets - Answer-Mercury, Venus, Earth, Mars. Earth is the largest of these 4. outter planets - Answer-Jupiter, Saturn, Uranus, Neptune. Large and all have rings (mostly made up of ice crystals). The most well-known rings belong to Saturn. These planets are also known as gas giants. since their mass is made up mostly of gas with rocks & mineral material at their core. Moon rotation - Answer-Travels in an elliptical orbit. Orbits earth every 27.322 days and rotates on its axis once in that time. The earth revolves - Answer-around the Sun in 365 days. A lunar eclipse occurs when - Answer-moon is between earth and sun. This happens at night and requires a full moon. A solar eclipse occurs when - Answer-the moon revolves directly in front of the sun during the day, this phenomenon occurs only 2 to 5 times per year. Only occurs during a new moon.