Week 31 Team Challenge Review: Magnetism + Electromagnetism

What happens when two like magnetic poles are brought close together?

• They repel
• They disappear
• They cancel
• They attract

Tags

NGSS.MS-PS2-3

What do magnetic field lines around a bar magnet show?

• Temperature of poles
• Color of magnet
• Electrical charge
• Direction and strength

Which part of the Earth acts like a giant magnet?

• The mantle
• The crust
• The atmosphere
• The core

What device shows direction using Earth’s magnetic field?

• Barometer
• Compass
• Thermometer
• Protractor

What can be used to visualize magnetic fields?

• Sand
• Iron filings
• Water
• Salt

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

Which poles attract each other?

• East and West
• North and South
• South and South
• North and North

What happens when an iron nail is placed in a coil with electric current?

• It becomes an electromagnet
• It melts
• It demagnetizes
• It breaks

Tags

NGSS.MS-PS2-5

What do electromagnets require to work?

• Plastic rod
• Static charge
• Magnetic rock
• Electric current

What increases the strength of an electromagnet?

• Removing the core
• Adding more coils
• Using a wooden rod
• Fewer wire coils

What type of magnet can be turned on and off?

• Electromagnet
• Temporary magnet
• Lodestone
• Bar magnet