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15 questions
When we do something like open a door, we use _____________
MUSCLES
ENERGY
CHEMICALS
GENERATOR
Sound, heat, falling things and electricity are all forms of matter / energy.
MATTER
ENERGY
Energy can / cannot be changed from one form to another.
CAN
CAN NOT
The energy of lifting water above our heads is stored as potential / kinetic energy in the water.
POTENTIAL
KINETIC
Baking soda and vinegar cause a(n) ____________________ reaction that releases energy.
CHEMICAL
POTENTIAL
HEAT
RELEASED
Kinetic energy can never be greater than the ______________________ energy in a pendulum.
POTENTIAL
HEATING
ELECTRICITY
SUN
Electricity can be made by heating / cooling steam or by falling water used to turn a generator.
HEATING
COOLING
A laser beam is heat converted from ______________ and can burn through a piece of plywood.
ELECTRICITY
GENERATOR
BURNED
RELEASED
We can store ________________________ in a bungee cord.
ENERGY
ELECTRICITY
CHEMICAL
RELEASED
A(n) ______________________ can convert water into electricity.
GENERATOR
RELEASED
CONVERTED
TURBINE
When fossil fuels like oil or coal are combined with oxygen, or ________________, energy is released.
BURNED
HEAT
POTENTIAL
ENERGY
The energy stored in food is really stored light energy from the moon / sun
MOON
SUN
We get hot when we exercise. Most of the energy in food is converted into __________ by our bodies.
HEAT
ENERGY
GENERATOR
SUN
Energy can be converted from one form to another, but a little bit of it is ____________________ into heat so the conversion is not perfect.
CONVERTED
HEAT
BURNED
GENERATOR
Potential energy is converted into kinetic energy when bungee cords are compressed / released.
COMPRESSED
RELEASED
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