Light Energy
Heat Energy
Kinetic and Potential Energy
Renewable Energy
Electrical and Sound Energy
100
Light always travels in a _______________ line.
straight
100
Explain what an insulator is and give an example.
Does not easily conduct heat and electricity. For example plastic or rubber.
100
What force pulls the objects towards the earth.
Gravity
100
Give 2 examples of renewable energy sources.
Solar, geothermal, hydroelectric, Wind, Biomass
100
Sound is created by _____________.
vibrations.
200
What are the 4 things that can happen to light when it hits a substance?
absorbed, transmitted, refracted, or reflected
200
Name a source of heat energy.
There are many but one example would be a fire.
200
Why is it easier to push a box of books on a tile floor than a carpet.
The carpet create friction.
200
What is a renewable resource?
A resource that can be easily replaced and doesn't run out.
200
A complete path of electricity is called a __________.
circuit
300
Describe what happens when light hits a mirror?
Light is reflected at the same angle it hit the mirror.
300
What are the 3 ways that heat energy can be transferred.
Conduction, convection, and radiation.
300
A moving car has what type of energy (kinetic or potential energy).
Kinetic energy.
300
When energy from the sun hits a solar panel it is converted into ______________.
Electricity.
300
Electrical energy can be converted into A. Heat B. Light C. Sound D. All of the above
D. All of the above
400
The majority of light energy on earth is produced by?
The sun.
400
Why can't convection occur in a solid?
Convection requires the movement of a fluid substance. In a solid, the particles are too close together to be able to move and flow.
400
The higher up an object, the more ______________ that it has.
Potential energy
400
Water flowing through a dam and converted into electricity is an example of which type of renewable resource?
hydroelectric energy.
400
Name 3 things that are required to complete a circuit.
A conductor, a power source, a load.
500
Why does a pencil in a cup of water appear broken?
The light is refracted or bent when it passes from the air to the water and that causes the pencil to appear bent.
500
You are standing outside on a summer day and you feel warmth from the sun. Explain what type of energy is being transferred and how.
Heat energy from the suns rays is being transferred through radiation.
500
Explain the difference between kinetic and potential energy.
Kinetic energy is the energy of motion. Potential energy is energy that an object has due to its position.
500
What is the most common way that wind energy is converted into electricity?
Using wind turbines or wind mills.
500
Why isn't there any sound in outer space?
Sound needs a medium to travel through and there isn't anything for sound to travel through in space.
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