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Quiz #1 PE and KE2

QuestionAnswer
LEVEL 1 — What is energy? Energy is the ability to cause change or make something move.
LEVEL 1 — What is potential energy? Potential energy is stored energy an object has because of its position.
LEVEL 1 — What is gravitational potential energy? Gravitational potential energy is stored energy caused by an object's height.
LEVEL 1 — What is kinetic energy? Kinetic energy is the energy an object has because it is moving.
LEVEL 1 — What does mass describe? Mass describes the amount of matter in an object.
LEVEL 1 — What does height describe in an energy situation? Height describes how far an object is above the ground or another reference point.
LEVEL 1 — What does speed describe? Speed describes how fast an object is moving.
LEVEL 1 — What two factors affect potential energy? Mass and height affect potential energy.
LEVEL 1 — What two factors affect kinetic energy? Mass and speed affect kinetic energy.
LEVEL 1 — Can an object have potential and kinetic energy at the same time? Yes. A moving object above the ground can have both potential and kinetic energy.
LEVEL 2 — How does increasing height affect potential energy? Potential energy increases when height increases.
LEVEL 2 — How does decreasing height affect potential energy? Potential energy decreases when height decreases.
LEVEL 2 — How does increasing mass affect potential energy? At the same height, increasing mass increases potential energy.
LEVEL 2 — How does increasing speed affect kinetic energy? Kinetic energy increases when speed increases.
LEVEL 2 — How does decreasing speed affect kinetic energy? Kinetic energy decreases when speed decreases.
LEVEL 2 — How does increasing mass affect kinetic energy? At the same speed, increasing mass increases kinetic energy.
LEVEL 2 — Can a motionless object have potential energy? Yes. A motionless object can have potential energy because of its height.
LEVEL 2 — Does a motionless object have kinetic energy? No. An object must be moving to have kinetic energy.
LEVEL 2 — What happens to potential energy as an object moves downward? Potential energy decreases because the object's height decreases.
LEVEL 2 — What happens to kinetic energy as a falling object gains speed? Kinetic energy increases because the object's speed increases.
LEVEL 3 — Two identical balls are placed at different heights. Which has more potential energy? The ball at the greater height has more potential energy because the masses are the same.
LEVEL 3 — Two objects are at the same height but have different masses. Which has more potential energy? The object with greater mass has more potential energy.
LEVEL 3 — Two identical objects move at different speeds. Which has more kinetic energy? The faster object has more kinetic energy because the masses are the same.
LEVEL 3 — Two objects move at the same speed but have different masses. Which has more kinetic energy? The object with greater mass has more kinetic energy.
LEVEL 3 — A ball is held above the ground. Which type of energy does it have? The ball has potential energy because it has height, but it does not have kinetic energy because it is not moving.
LEVEL 3 — A ball falls toward the ground. How do its potential and kinetic energy change? Potential energy decreases as height decreases, while kinetic energy increases as speed increases.
LEVEL 3 — A toy car is released from the top of a ramp. What happens to its potential energy? Its potential energy decreases as the car moves to a lower height.
LEVEL 3 — A toy car speeds up while rolling down a ramp. What happens to its kinetic energy? Its kinetic energy increases because its speed increases.
LEVEL 3 — Where does a pendulum have the greatest potential energy? At the highest points of its swing because its height is greatest.
LEVEL 3 — Where does a pendulum have the greatest kinetic energy? Near the bottom of its swing because it is moving fastest.
LEVEL 3 — Where does a diver have the greatest potential energy? At the diver's highest position above the water.
LEVEL 3 — How does a diver's energy change while falling toward the water? Potential energy decreases as height decreases, while kinetic energy increases as speed increases.
LEVEL 3 — A skateboarder is motionless at the top of a hill. What energy does the skateboarder have? The skateboarder has potential energy because of height but no kinetic energy because there is no motion.
LEVEL 3 — A skateboarder moves down a hill and gains speed. What energy changes occur? Potential energy decreases while kinetic energy increases.
LEVEL 3 — A heavier and lighter ball are dropped from the same height. Which begins with more potential energy? The heavier ball begins with more potential energy because it has greater mass.
LEVEL 4 — What should a potential-energy graph show as height increases? The graph should show potential energy increasing as height increases.
LEVEL 4 — What should a kinetic-energy graph show as speed increases? The graph should show kinetic energy increasing as speed increases.
LEVEL 4 — What does an upward-sloping line on a graph show? The quantity on the vertical axis increases as the quantity on the horizontal axis increases.
LEVEL 4 — What does a downward-sloping line on a graph show? The quantity on the vertical axis decreases as the quantity on the horizontal axis increases.
LEVEL 4 — A graph shows potential energy decreasing as height increases. Is the graph reasonable? No. Potential energy should increase as height increases.
LEVEL 4 — A graph shows kinetic energy increasing as speed increases. Is the graph reasonable? Yes. Greater speed produces greater kinetic energy.
LEVEL 4 — A graph shows kinetic energy remaining constant while speed increases. Is the graph reasonable? No. Kinetic energy should increase when speed increases.
LEVEL 4 — How do you analyze an energy data table? Identify what changes between the rows, compare the values, and connect the pattern to mass, height, or speed.
LEVEL 4 — How do you analyze an energy bar graph? Read the title and labels, identify what each bar represents, compare the bar heights, and connect the differences to the energy factors.
LEVEL 4 — How do you analyze an energy line graph? Read the title, axes, and key; determine which lines increase or decrease; and connect the patterns to height, mass, speed, or motion.
LEVEL 4 — Why must you examine a graph's axes? The axes identify the variables and show what each value represents.
LEVEL 4 — Why must you examine a graph's key or legend? The key identifies the energy type represented by each line, color, or pattern.
LEVEL 4 — How do you decide whether evidence supports a claim? Compare the claim with the object's mass, height, speed, and motion. Accept the claim only when the evidence agrees.
LEVEL 4 — Student 1 says a higher object has less potential energy. Should you accept or deny the claim? Deny the claim because potential energy increases as height increases.
LEVEL 4 — Student 2 says a faster object has more kinetic energy. Should you accept or deny the claim? Accept the claim because kinetic energy increases as speed increases.
LEVEL 5 — What should you identify first in a potential-energy comparison? Identify the masses and heights of the objects.
LEVEL 5 — What should you identify first in a kinetic-energy comparison? Identify the masses and speeds of the objects.
LEVEL 5 — If two objects have the same mass, what should you compare? Compare height to determine potential energy or speed to determine kinetic energy.
LEVEL 5 — If two objects are at the same height, what should you compare? Compare their masses. The object with greater mass has more potential energy.
LEVEL 5 — If two objects move at the same speed, what should you compare? Compare their masses. The object with greater mass has more kinetic energy.
LEVEL 5 — What words should you circle or underline in an energy question? Circle or underline greatest, least, increases, decreases, height, mass, speed, moving, and at rest.
LEVEL 5 — What four clues should you find in an energy situation? Find the object's height, mass, speed, and whether it is moving.
LEVEL 5 — What steps should you use when answering a graph question? Read the title, label both axes, study the key, identify the pattern, and match the pattern to the situation.
LEVEL 5 — What sentence frame can explain a potential-energy comparison? The _____ has more potential energy because it has greater _____.
LEVEL 5 — What sentence frame can explain a kinetic-energy comparison? The _____ has more kinetic energy because it has greater _____.
LEVEL 5 — What sentence frame can explain an energy change? As the object's _____ decreases or increases, its _____ energy decreases or increases because _____.
LEVEL 5 — How can you check an answer before submitting it? Make sure the answer matches the object's mass, height, speed, and motion and answers exactly what the question asks.
Created by: user-1962177
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