Fundamental Forces Answers

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3

The electromagnetic force is

A
attractive.
B
repulsive.
C
both attractive and repulsive.
D
neither attractive nor repulsive.
4

Which two fundamental forces act within the atomic nucleus?

A
gravitational and weak
B
strong and electromagnetic
C
strong and weak
D
electromagnetic and gravitational
5

Which answer lists the fundamental forces in order from strongest to weakest?

A
strong, electromagnetic, weak, gravitational
B
gravitational, weak, electromagnetic, strong
C
strong, gravitational, weak, electromagnetic
D
strong, electromagnetic, gravitational, weak
6

The electromagnetic force acts between [___].

A
all objects in the universe
B
electrically charged particles
C
protons and neutrons
7

Which of the two fundamental forces are attractive only?

A
weak and strong
B
weak and electromagnetic
C
strong and electromagnetic
D
strong and gravitational
8

When water flows from a faucet, the water molecules tend to join together and form a stream.Which of the four fundamental forces most likely accounts for this, and why?

Answer:

The electromagnetic force accounts for water molecules joining together to form a stream. This is because water molecules are polar, and the attraction between the positive and negative charges of the molecules is an electromagnetic interaction.

9

The gravitational force is the weakest of the four fundamental forces. Does that mean that the gravitational force does not have an important role in the universe? Explain your answer.

Answer:

No, gravity is still incredibly important. While it is the weakest force at a subatomic level, its influence is cumulative and acts over infinite distances. It is the force responsible for holding planets in orbit, forming stars and galaxies, and maintaining the overall structure of the universe.

10

What did you include in your response? Check all that apply.

A
The water molecules are attracted to each other.
B
The electromagnetic force causes this attraction.
11

What did you include in your response? Check all that apply.

A
The gravitational force is still important.
B
The gravitational force is strong enough to hold the entire universe together.
C
It can act over infinitely great distances.

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