Electromagnetism/Energy/Forces

What types of charges attract?

• Positive and Positive
• Positive and Neutral
• Negative and Neutral
• Positive and Negative

When two magnets repel, they ________________

• change color
• pull together
• push apart
• get colder

As the product of two objects' masses increases, the pull of gravity

• Increases
• Decreases
• Stays the same

The region around a magnet where magnetic forces act is called a(n)

• Gravitational Field

• Magnetic Area

• Electrostatic Field

• Magnetic Field

This image represents electrical field lines that will

• Attract

• Repel

This image represents the field lines of electrical charges that will

• Attract

• Repel

If you wrap more coils around an electromagnet, it will become

• brighter

• stronger

• weaker

• invisible

Particles with opposite charges ____________ and particles with same (or like) charges ____________.

• attract, repel

• repel, repel

• attract, attract

• repel, attract

What happens if you cut a magnet in half?

• Nothing

• The magnets repel

• There will be two magnets

This is a picture of a simple electromagnet. How can the electromagnet be made stronger?

• Add more coils of wire to the nail.
• Use a smaller battery.
• Reverse the poles of the magnet.
• Remove all the coils and the nail.