Science Q4 Review

Four boxes of plastic, glass, iron and wood each are placed near a strong magnet. Which box will be attracted towards the magnet?

• iron

• wood

• glass

• plastic

Tags

NGSS.MS-PS2-3

The two poles of a magnet are called __________.

• East and West

• Positive and Negative

• Up and Down

• North and South

Which statement is true about magnetic poles?

• like poles attract

• like poles are not possible

• opposite pole repel

• opposite pole attract

Loren places two bar magnets on a table. She slowly slides one magnet closer to the second magnet. Eventually, the second magnet begins to move away from the first. What can she conclude about the repulsive force between the magnets?

• The force increases with increasing distance between the magnets

• the force increases with decreasing distance between the the magnets

• The force is unaffected by the distance between the magnets

• there is no force between the magnets

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

What causes Earth's Magnetic field?

• material coming out of the North and South poles

• Earth's liquid core spinning more slowly than Earth's surface

• Earth's solid core spinning faster than Earth's surface

• a mathematical model

Tags

NGSS.HS-PS2-5

What is observed when iron filings are sprinkled over a magnet?

• magnetic poles

• magnetic field

• the nucleus of an atom

• the magnetic radiation

Tags

NGSS.MS-PS2-5

Christopher constructed four electromagnets, each with different numbers of coils. He connected each of electromagnets to a 9 volt battery and counted how many paper clips each magnet could pick up. He recorded his data in the table. Which of the following is a likely explanation of his observations?

• Big electromagnets pick up more than small ones

• The more coils an electromagnet has the stronger the magnetic field it produces

• adding coils to an electromagnet increases the number of paper clips it can pick up

• the number of coils that an electromagnet has always determines its strength

Tags

NGSS.MS-PS2-3

Which of the following is a device in which magnetism is produced by an electric current running though a wire wrapped around an iron or steel core?

• generator

• battery

• electromagnet

• motor

How can you make an electromagnet more powerful?

• Decrease the number of coils

• Decrease the amount of electricity

• Increase the number of coils

• Use thicker wire

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

A ____________ is the coiled wire in an electromagnet

• Battery

• Solenoid

• Iron Core