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Energy Basics Flashcards
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1
Question
What is light energy?
Page 1
Answer
Light energy is energy from light sources such as the Sun and light bulbs.
2
Question
How does light energy travel?
Page 1
Answer
Light energy travels in waves and can travel through space.
3
Question
What is thermal energy?
Page 1
Answer
Thermal energy is the heat energy contained in all matter due to the movement of particles.
4
Question
What causes thermal energy?
Page 1
Answer
Thermal energy is caused by the movement of particles in matter; faster movement means higher temperature.
5
Question
What is electrical energy?
Page 2
Answer
Electrical energy comes from the flow of electric charges through a circuit.
6
Question
What is kinetic energy?
Page 2
Answer
Kinetic energy is the energy of moving objects.
7
Question
Give an example of kinetic energy.
Page 2
Answer
A car driving or a guitar string vibrating are examples of kinetic energy.
8
Question
What is sound energy?
Page 2
Answer
Sound energy is produced by vibrating objects and travels as waves through a medium like air.
9
Question
What is potential energy?
Page 3
Answer
Potential energy is stored energy in an object due to its position or state.
10
Question
What is elastic potential energy?
Page 3
Answer
Elastic potential energy is stored in stretched or compressed objects, like a rubber band or spring.
11
Question
What is gravitational potential energy?
Page 3
Answer
Gravitational potential energy is stored in an object due to its height above the ground.
12
Question
What is chemical potential energy?
Page 4
Answer
Chemical potential energy is stored in the bonds between atoms and molecules.
13
Question
What is nuclear energy?
Page 4
Answer
Nuclear energy is stored in the nucleus of atoms and released during fission or fusion.
14
Question
How can energy be transferred?
Page 5
Answer
Energy can be transferred from one object to another when they interact, such as through heating or doing work.
15
Question
How can energy be transformed?
Page 5
Answer
Energy can be transformed from one form to another, such as chemical to thermal in a car engine.
16
Question
What is an energy transformation in a plant?
Page 5
Answer
Light energy from the Sun is transformed into chemical energy in glucose during photosynthesis.
17
Question
What is an energy flow diagram?
Page 6
Answer
An energy flow diagram shows how energy is transferred and transformed in a device or process.
18
Question
Where does energy come from in a torch?
Page 6
Answer
Chemical energy from the battery is transformed into electrical, then light and thermal energy.
19
Question
What energy transformations occur in a mobile phone?
Page 7
Answer
Chemical energy from the battery transforms into electrical, light, sound, and thermal energy.
20
Question
What is conduction?
Page 9
Answer
Conduction is the transfer of heat energy through solids by vibrating particles passing energy to neighbors.
21
Question
What is a good conductor of heat?
Page 9
Answer
Metals are good conductors of heat because their particles are closely packed and can transfer energy easily.
22
Question
What is an insulator?
Page 9
Answer
An insulator is a material that does not conduct heat well, trapping energy within.
23
Question
What is convection?
Page 10
Answer
Convection is the transfer of heat energy in fluids by the movement of warmer, less dense particles rising.
24
Question
Give an example of convection in the ocean.
Page 10
Answer
Warm water from the equator moves to cooler poles, driving ocean currents.
25
Question
What is radiation?
Page 11
Answer
Radiation is the transfer of heat energy by electromagnetic waves, which can travel through space.
26
Question
What absorbs radiation well?
Page 11
Answer
Dark, matt surfaces absorb radiation well, while light, shiny surfaces reflect it.
27
Question
What is electricity?
Page 13
Answer
Electricity is the presence and flow of electric charges, such as electrons in a circuit.
28
Question
What is static electricity?
Page 13
Answer
Static electricity is the buildup of electric charges on an object's surface.
29
Question
What is a conductor?
Page 13
Answer
A conductor is a material that allows electric charges to flow easily, like metals.
30
Question
What is an insulator in electricity?
Page 13
Answer
An insulator is a material that does not allow electric charges to flow easily, like rubber.