Current Electricity BrainPOP

What do fuel cells, batteries, and solar cells have in common?

• a. They all produce static electricity

• b. They are all sources of direct current

• c. They are all sources of alternating current

• d. They can all be used to power automobiles

What can you infer about this source of electricity?

• a. It is a source of alternating current

• b. It is a source of direct current

• c. It is a source of static electricity

• d. It is a source of electromagnetic radiation

Tags

NGSS.HS-PS2-5

NGSS.HS-PS3-5

How does alternating current differ from direct current?

• a. Alternating current produces more voltage than direct current

• b. Alternating current always flows in the same direction; the direction of a direct current switches back and forth

• c. Direct current produces more voltage than alternating current

• d. Direct current always flows in the same direction; the direction of an alternating current switches back and forth

How does electricity travel from power plants to your house?

• a. It travels through the air as electromagnetic waves

• b. Through a series of generators

• c. Through a series of many transformers

• d. Through transmission wires

What is the function of every generator on Earth?

• a. Changing wind energy into electrical energy

• b. Changing heat energy into electrical energy

• c. Changing mechanical energy into electrical energy

• d. Changing solar energy into electrical energy

Tags

NGSS.HS-PS3-1

NGSS.HS-PS3-3

How does a generator create current?

• a. By using an electromagnet

• b. By using an internal combustion engine

• c. By using a fan

• d. By using energy from the sun

Tags

NGSS.HS-PS2-5

Place the following events in sequence: A) Voltage is increased by a transformer; B) Voltage is decreased by a transformer; C) Electrical current enters your home

• a. A, B, C

• b. B, A, C

• c. A, C, B

• d. B, C, A

Which of the following are sources of mechanical energy?

• a. Cars and trucks

• b. Radios and televisions

• c. Transmission lines and transformers

• d. Wind and fossil fuels

What is the main function of a turbine?

• a. Producing a magnetic field

• b. Spinning

• c. Reducing the voltage of an electrical current

• d. Increasing the voltage of an electrical current

What is one possible reason why it's a good idea to conserve electricity?

• a. It is often produced by burning fossil fuels, which are a polluting, non-renewable resource.

• b. Power companies only give each home a limited amount of electricity every day.

• c. Using too much electricity can start dangerous electrical fires.

• d. Using too much electricity can cause power plants to break down.

Tags

NGSS.HS-ESS3-4

NGSS.HS-ESS3-6