Energy
When if you hold something high in the air it has _______ energy.
Potential
What energy transformation happens in an oven?
electrical to heat
The distance between 2 crests in a wave is called the
wavelength
A battery has
chemical energy
Why is it important to seek alternative energy sources to replace fossil fuels?
Fossil fuels will eventually run out because they are nonrenewable. Using alternative energy is helpful because it is renewable and can be reused.
potential energy, kinetic
What energy transformation happens in an TV?
electrical to sound and light
The height of a wave is called
amplitude
a wind turbine has
wind energy
An engineer is trying to build a car that does not use fossil fuels or chemical energy to move. What do you suggest the engineer use to power the car?
a. solar panels
b. gasoline
c. lightbulbs
d. batteries
a. solar panels
When energy transfers from one thing to the next, for example, when the sun helps grow corn that a chicken eats and then a person eats the chicken and has energy to play, this is called an _________________.
energy system
What energy transformation happens in a blender?
electrical to mechanical and sound
Wave energy moves in patterns and is found in (3 answers)
light, sound, and mechanical energy
lightbulbs have what types of energy
light, thermal, electrical
A wind turbine uses ____ energy to produce electricity.
Wind
When bouncing a basketball, some of the mechanical energy is transformed into _____________.
Sound Energy
What energy transformation happens when a streetlight absorbs sunlight during the day and glows at night?
solar to light
a. the sound waves will increase in frequency over time
b. the sound waves will follow the same pattern over time
c. the sound waves will be heavier over time
d. the sound waves will lose energy over time.
b. the sound waves will follow the same pattern over time
A pencil sharpener has what types of energy
electrical, mechanical, sound, thermal
Geothermal energy uses the heat inside the _____ to create a renewable energy source.
Earth
A bike, a truck, and a train, all without passengers, motors, or engines, roll down the same hill. Put the vehicles in order from the least amount of motion energy to the most.
bike, truck, train
What energy transformation happens when a baseball player uses food energy to play a game?
chemical to mechanical
a. waves with a short frequency
b. waves with a high frequency
c. waves with a small amplitude
d. waves with a long wavelength
b. waves with a high frequency
The sun assists in the growth of an apple. Hank picks the apple and eats it. Hank plays soccer with his friends. There is a loud sound when he kicks the ball.
___energy ~> ___ energy ~> ___ energy ~> ___ energy
solar energy ~> chemical energy ~> mechanical energy ~> sound energy
Solar panels, wind turbines, waterwheels, geothermal energy plants.