Grade 4 Science Exam

Which is where geothermal energy comes from?

• inside Earth

• the Sun

• wind turbines

• hydroelectric dams

Lilly learned that fossil fuels contain a lot of energy. Why are fossil fuels considered nonrenewable resources?

• Fossil fuels are essential to civilization.

• Fossil fuels cannot be replaced fast enough for future use.

• Fossil fuels are easily renewed.

• Fossil fuels are alternative energy sources.

Which of the following is renewable resources?

• fossil fuels

• hydroelectricity

• coal

• copper

The act of saving, protecting, or using resources wisely is ______.

• reservation

• generation

• conservation

• production

Which of the following is not an advantage to renewable energy?

• Solar power is abundant as a resource.

• Hydroelectric dams block rivers and streams.

• Biomass energy uses waste products to create energy.

• Wind energy can be generated day and night.

Why is solar power a renewable energy source?

• It cannot be used up.

• It is a natural resource.

• It creates extra sunlight.

• It creates new sources of gasoline.

Energy can change from one form to another. Which can change mechanical energy into electrical energy?

• a switch

• an electromagnet

• a transformer

• a generator

Suppose you turn on a fan. Which energy conversion happens inside the electric motor?

• radiant to electrical

• heat to stored energy

• nuclear to electrical

• electrical to energy of motion

Which statement is not true about nuclear energy?

• Nuclear energy is created using fossil fuels.

• Nuclear energy is a nonrenewable resource.

• Nuclear energy is used to generate electricity.

• Nuclear energy waste may damage the environment.

Scientists are designing a new car that runs on renewable energy sources. How would a prototype be used during the design process?

• to show the final design

• to change the original design

• to collect data about the design

• to show how fossil fuels are used