Exploring Magnetic Materials and Their Properties

What is the main focus of this lesson?

• The property of magnetism

• The property of conductivity

• The property of elasticity

• The property of density

Which of the following is NOT an example of a magnetic material application mentioned in the video?

• Fridge magnets

• Computer disks

• Loudspeakers

• Solar panels

What was the name of the ancient Greek shepherd associated with the discovery of magnetism?

• Odysseus

• Achilles

• Magnus

• Hercules

Tags

CCSS.L.3.6

CCSS.L.1.6

CCSS.L.K.5A

What did early explorers use lodestones for?

• To determine direction

• To find water

• To start fires

• To communicate

What is a lodestone?

• A type of crystal

• A type of plant

• A naturally occurring permanent magnet

• A type of metal

What material did blacksmiths discover could be magnetized by beating it into shape?

• Gold

• Steel

• Aluminum

• Copper

What happens when a steel pin is stroked with a permanent magnet?

• It becomes magnetized

• It melts

• It becomes non-magnetic

• It changes color

What is the purpose of the practical investigation mentioned in the video?

• To test the strength of materials

• To measure the weight of materials

• To determine the color of materials

• To identify magnetic and non-magnetic materials

Which of the following is NOT a way to magnetize a magnetic material mentioned in the video?

• Stroking with a magnet

• Heating the material

• Hammering the material

• Lying next to a magnet

What direction does a free-moving magnet align itself to?

• Left-Right

• East-West

• North-South

• Up-Down