Energy Equations
This type of energy is also referred to as stored energy
What is potential energy?
This form of energy is also known as heat energy
What is thermal energy?
Most of the energy on Earth can be traced back to:
What is the sun?
Name three common types of alternative (renewable) energy
What are hydropower, wind power, solar power, biofuel, or geothermal energy? (Pick 3)
Energy is measured in units called:
What are joules?
This form of energy is also referred to as energy in motion
What is kinetic energy?
This form of energy is stored in atoms, and is also the stored energy in the sun
What is nuclear energy?
This source of energy comes from the remains of dead animals and plants that lived millions of years ago
What are fossil fuels?
Name the three kinds of fossil fuels
What are coal, oil, and natural gas?
The process that plants use to convert electromagnetic energy from the sun into stored chemical energy
What is photosynthesis?
The formula for potential energy
What is pe = mgh (mass x gravity x height)?
This form of energy is the stored energy found in plants and animals (including humans)
What is chemical energy?
A person goes for a run. Their body is transforming the ________ energy that is stored in their body to ________ energy while they run
What are chemical and mechanical energy?
This type of energy is demonstrated when the wind turns a wind turbine
What is mechanical energy?
These two kinds of energy can be found in a toaster: the toaster converts ________ energy from the outlet into __________ energy which heats up your food
What are electrical and thermal energy?
The formula for kinetic energy
What is mv2/2 (mass x velocity squared divided by 2)?
This is a form of potential energy that involves the energy stored in a material that has been stretched (ex: a bow and arrow, a rubber band)
What is elastic potential energy?
When coal is burned, the ________ energy stored in coal is transformed into ________ energy that turns water into steam
What are chemical and thermal energy?
The burning of fossil fuels contributes to global warming by producing:
What is carbon dioxide/CO2?
When a car is sitting still at the top of a hill, it has high _________ energy, but does not have _________ energy until it starts moving down the hill
What are potential and kinetic energy?
A person is about to dive off of a diving board that is 10m high. We know they weigh 50 kg. Their gravitational potential energy is: _______
*Include units of energy in your answer
What is 5000 joules?
The stored potential energy in the sun is __________ energy. The energy in rays of sunlight is __________ energy
What are nuclear and electromagnetic energy?
This law states that energy can neither be created nor destroyed
What is the law of conservation of energy?
The sun heats up the beach, and the hot air over the beach rises. This creates a ________ over the beach, which causes cool air from over the water to move in and creates wind
What is a vacuum?
A 10 kg rock sitting on a 5 kg chair is at the top of a 90 meter cliff. If the wind is blowing 60 mph, and the rock begins to fall off of the cliff, but a bullet going 90 mph hits the rock just as it is beginning to fall, what is the gravitational potential energy of the rock after it hits the ground?
What is 0 joules?