Energy Unit Review #1
Flashcard
•
Science
•
7th Grade
•
Practice Problem
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is friction?
Back
Friction is a force that opposes the motion of an object. It occurs when two surfaces rub against each other.
2.
FLASHCARD QUESTION
Front
What type of energy is transferred by waves?
Back
Radiation is the movement of energy by waves, such as light and heat.
3.
FLASHCARD QUESTION
Front
What is potential energy?
Back
Potential energy is the energy stored in an object due to its position or height. For example, a rock at the top of a cliff has high potential energy.
4.
FLASHCARD QUESTION
Front
What is kinetic energy?
Back
Kinetic energy is the energy of an object in motion. The faster an object moves, the more kinetic energy it has.
5.
FLASHCARD QUESTION
Front
How does height affect potential energy?
Back
The higher an object is, the more potential energy it has. For example, a rock at the top of a cliff has more potential energy than at the bottom.
6.
FLASHCARD QUESTION
Front
What is the relationship between kinetic energy and speed?
Back
Kinetic energy increases with the square of the speed. If the speed doubles, the kinetic energy increases by four times.
7.
FLASHCARD QUESTION
Front
What is the formula for calculating potential energy?
Back
Potential Energy (PE) = mass (m) × gravity (g) × height (h).
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