Kinetic and Potential Energy
What is kinetic energy?
The energy of motion
A pinwheel rotating a candle. What energy transformation is being used?
heat to mechanical energy
How does a solar heating system heat a home?
A) sunlight b) heating air c)heating water d) Water pump
a) sunlight
What is a nonrenewable resource?
Coal, Oil, Fossil Fuels
A lamp converts electrical energy to light energy. what is the electrical energy converted to:
heat energy
What is potential energy?
Energy that is stored
The sunlight heating up solar cells when turns on a fan and radio shows what changes in energy form?
light energy-> electrical-> mechanical and sound
What is an example of a renewable resource?
Geothermal energy, solar energy, wind energy, biomass energy, tidal energy
Why are fossil fuels considered nonrenewable?
because they take millions of years to form
What type of energy transferred by vibrational waves?
sound energy
At what point during a waterfall does the water have the greatest kinetic energy?
When it is falling
The more units of energy consumed means more heat energy. True or alse
True
Which energy source is renewable?
a) oil b) solar c) coal d) natural gas
b) solar
Why is coal considered a nonrenewable resource?
Because it takes millions of years to form
Which device converts chemical energy to electrical energy?
When a boulder is rolling down what position does the boulder have the greatest kinetic energy?
when it is falling down.
Coal powering a boiler which produced steam when powers on a turbine generator which powers a house's electricty which then powers a hair dryer. How is the energy stored in the coal?
a) it is recycled or b) it is transformed
b) it is transformed
What is the main source of energy for the water cycle?
the sun
What are some ways we use nonrenewable resources?
example coal to fire a grill
How does children playing baseball show energy transformation?
Why does someone standing higher up have more potential energy than someone that is lower?
Because more energy can be stored
A television set changes electrical energy to sound and light enerfgy. In this process some energy
a) destroyed b) changed to heat
changed to heat
Why is geothermal energy a renewable resource?
answers vary
Why is gasoline a nonrenewable resource?
answers vary
How is throwing a ball in the air show energy transformation?
Potential to Kinetic energy