

Energy transformation Flashcards
Flashcard
•
Science
•
8th Grade
•
Practice Problem
•
Easy
HAYDEE CAROLINA MENDOZA BALBOA
Used 1+ times
FREE Resource
Student preview

9 questions
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1.
FLASHCARD QUESTION
Front
A student constructed a simple motor.
When connected correctly, the coil of copper wire spins. Which of the following best describes the energy transformations that takes place to make the copper wire spin?
Back
mechanical energy to electrical energy to chemical energy
2.
FLASHCARD QUESTION
Front
The term, transform, means to change into a new form. Which of the following is the best example of chemical energy being transformed into light energy and heat energy?
Back
turning on a battery-powered flashlight
3.
FLASHCARD QUESTION
Front
A student is working on his homework at his desk. He turns on his desk lamp, which uses a 60-watt light bulb. After an hour, he finishes his homework and reaches to turn off the lamp. When he touches the top of the lamp, he notices that it feels warm. Why does the top of the lamp feel warm?
Back
Some of the electrical energy was changed to heat.
4.
FLASHCARD QUESTION
Front
Energy from the Sun is transferred through a food chain. Which of the following best explain a part of this process?
Back
Light energy from the Sun is transformed into mechanical energy in producers.
5.
FLASHCARD QUESTION
Front
A student is working on his homework at his desk. He turns on his desk lamp, which uses a 60-watt light bulb. After an hour, he finishes his homework and reaches to turn off the lamp. When he touches the top of the lamp, he notices that it feels warm. Why does the top of the lamp feel warm?
Back
Some of the electrical energy was changed to heat.
6.
FLASHCARD QUESTION
Front
Energy cannot be created nor destroyed, only changed from one form to another. How does listening to music on a radio obey the law of conservation of energy?
Back
Electrical energy is changed into other forms of energy such as sound.
7.
FLASHCARD QUESTION
Front
What is the amount of energy transferred from each level in the above illustration?
Back
10%
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