What is the primary reason LEDs allow batteries in flashlights to last longer than traditional light bulbs?
Energy Test Review

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Science
•
6th Grade
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
Back
Less electrical energy is transformed into thermal energy as heat.
2.
FLASHCARD QUESTION
Front
When is the elastic energy in a dropped tennis ball greatest?
Back
Just before the ball starts to bounce upward.
3.
FLASHCARD QUESTION
Front
Define thermal energy.
Back
Thermal energy is the energy that comes from the temperature of matter. It is the total kinetic energy of the particles in an object.
4.
FLASHCARD QUESTION
Front
What is elastic energy?
Back
Elastic energy is the potential energy stored in an object when it is compressed or stretched.
5.
FLASHCARD QUESTION
Front
Explain the concept of energy transformation.
Back
Energy transformation is the process of changing energy from one form to another, such as electrical energy to light energy in a light bulb.
6.
FLASHCARD QUESTION
Front
What is the relationship between energy efficiency and heat production in light sources?
Back
Higher energy efficiency means less energy is wasted as heat, resulting in longer battery life and cooler operation.
7.
FLASHCARD QUESTION
Front
Describe how gravitational potential energy changes as an object falls.
Back
As an object falls, its gravitational potential energy decreases while its kinetic energy increases.
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