Sun & Photosynthesis
What does the sun provide to power life on Earth?
Light and heat
What are fossil fuels made from?
Ancient plants and animals
What causes wind on Earth?
The Sun's uneven heating
What fuel is used in nuclear power stations?
Uranium
What type of energy comes from the Sun in waves?
Radiant energy
Can the sun's energy be stored? Where?
Yes, in plants as chemical energy or in batteries.
Is biomass renewable or nonrenewable?
Renewable
What is a reservoir used for?
Storing water for hydroelectric energy
What is the name of the machine where nuclear reactions happen?
Reactor
Name two units of measurement used for energy.
True or False: All energy on Earth originally comes from the Sun.
True
Name two examples of biomass.
Wood, animal waste, etc.
Which country produces the most electricity from wind energy?
Which country has the most nuclear power plants in operation?
The United States
Which energy form do solar panels convert sunlight into?
Electrical energy
Why is photosynthesis important for animals too?
It creates oxygen and food for animals.
What is one reason fossil fuels are bad for the environment?
Pollutants, CO2 emissions.
What country invented the first windmill for electricity generation in 1887?
Scotland
Is nuclear energy renewable or nonrenewable?
Nonrenewable - uranium is limited.
What is the definition of "energy"?
Energy is a physical quantity that measures the capacity of a body to produce changes in itself or in other bodies.
How long does it take for sunlight to reach Earth?
8 minutes and 20 seconds
Compare biomass and fossil fuels.
Biomass is renewable and recent; fossil fuels take millions of years
Why is hydroelectric energy considered renewable?
Water is part of the natural cycle and doesn’t run out
What is a benefit and a risk of nuclear energy?
Lots of energy, but it produces radioactive waste.
Which European country gets nearly 100% of its electricity from renewable sources, especially hydropower and geothermal?
Iceland