Exploring electrical energy

What is electrical energy?

• The energy of the sun

• The energy generated by the forces between charged particles

• Energy stored in food

• The force of gravity

Tags

NGSS.4-PS3-2

Which particles in an atom carry a positive charge?

• Electrons

• Protons

• Neutrons

• Atoms

What is electricity best described as?

• The flow of water

• The flow of electrical energy from moving electrons

• The flow of heat

• The movement of protons

Answer explanation

Electricity is best described as the flow of electrical energy from moving electrons, as it involves the movement of these charged particles through a conductor, enabling energy transfer.

Tags

NGSS.4-PS3-2

Why is electricity dangerous?

• It flows slowly

• It can cause shocks, burns, or death

• It is too heavy to transport

• It flows only through wood

Which of the following is a good conductor of electricity?

• Rubber

• Plastic

• Copper

• Glass

Why should you not swim during a thunderstorm?

• The water is too cold

• Water is a good conductor of electricity

• The rain will stop you from swimming

• Fish could be dangerous

Answer explanation

You should not swim during a thunderstorm because water is a good conductor of electricity. If lightning strikes the water, it can cause serious injury or death.

Tags

NGSS.4-PS3-2

Electricity can flow easily through rubber. (True / False)

• True

• False

Conductors allow electric charges to flow easily. (True / False)

• True

• False

The outside of electrical cords is made of metal to keep electricity flowing. (True / False)

• True

• False

Water is an insulator of electricity. (True / False)

• True

• False

Tags

NGSS.5-PS1-3