Natural Resources
What is a natural resource?
Something found in nature that people use.
What is an example of a renewable energy resources?
Some examples are wind, solar, geothermal, hydropower, and biomass energy.
What are some things we can recycle?
Glass, paper, metal, and plastic
How does energy change forms in a vacuum cleaner?
A vacuum cleaner changes electrical energy to mechanical (kinetic) energy to sound and thermal (heat) energy. Some vacuums also change electrical to light energy if they have a light on them.
What is a complete or closed circuit?
A complete or closed circuit is a path around which electricity can flow. It must include a source of electricity, such as a battery and a load, such as a lightbulb.
Everything on planet earth gets energy from what?
The SUN.
What are some nonrenewable energy resources?
Some examples are nuclear energy, fossil fuels, coal, crude oil, and natural gas.
What are some ways you can save water?
Turning off the faucet while brushing teeth and taking a shorter shower.
How does energy change forms in a solar cooker?
A solar cooker changes light energy into heat energy.
What is an open or incomplete circuit?
An open or incomplete circuit is when there is a break in the path between the source (battery) and the load (lightbulb). Since the electricity can't flow along the path back to the source, the bulb would not light up.
What are fossil fuels?
A nonrenewable resource formed from the remains of dead plants and animals from millions of years ago.
What is a problem with using nonrenewable resources for energy?
Burning these puts carbon dioxide into the air which causes global warming and climate change.
Burning these causes pollution.
Extinction of animals
Natural disasters
What are some ways we can reduce food waste?
Eat leftovers or cook with them, freeze food to use at a later time, don't overbuy foods that may not be eaten.
How is energy changing forms when a person plays the trumpet?
A person changes chemical energy from food into mechanical energy to play the trumpet. The trumpet changes the mechanical energy into sound energy. There is also thermal energy (heat) that happens in this process.
What are some examples of conductors of electricity?
Examples include copper, wires, metals, and even water.
What is a renewable resource?
The resource can be replenished so it is available for other people to use it in the future.
What is solar power?
Panels collect light from the sun and convert it to electricity.
What are some ways we can save electricity?
Shut down electronics each night, use LED lightbulbs, turn off lights when you leave a room, unplug unused electronics, turn off the air-con when you are not at home.
How does energy change when a battery is placed in a circuit?
The stored chemical energy in a battery changes to electrical energy when it is in a complete circuit.
What are some examples of insulators in a circuit?
Examples of insulators include plastic, rubber, wood, and glass.
What is a nonrenewable resource?
The resource can't be replenished within a person's lifetime.
How is electricity produced by wind?
Moving wind or water turns a turbine which is connected to a generator to create electricity.
What is sustainability?
This looks at ways of making sure our natural resources last a very long time or even forever.
How does energy change forms in a campfire?
When it burns, the stored chemical energy in the wood changes to electromagnetic (light) and thermal (heat) energy.
How does energy change in a circuit with a battery, wires, and a buzzer?
The stored chemical energy in the battery changes to electrical energy when it is in a complete circuit. The electrical energy changes to sound energy when it goes through the buzzer. Some thermal (heat) energy is also released.