2024 Fall Semester Final Review - Part 3

Front

What happens to the gravitational force between two objects if the distance is tripled and the mass of one object is tripled?

Back

The gravitational force becomes 1/3 as much.

Front

What is the reaction that makes a star shine?

Back

Nuclear Fusion.

Front

What type of stars become the brightest as they reach old age and expand?

Back

Massive stars.

Front

In an experiment to see how the mass of a ball affects the distance it rolls off a ramp, what is the dependent variable?

Back

Distance traveled by the ball.

Front

What does the photoelectric effect suggest about the nature of light?

Back

Light should be treated as a particle, because energy did not depend on amplitude.

Front

What is gravitational force?

Back

The attractive force between two masses.

Front

Define nuclear fusion.

Back

A process where two light atomic nuclei combine to form a heavier nucleus, releasing energy.

Front

What is the difference between nuclear fusion and nuclear fission?

Back

Nuclear fusion combines nuclei, while nuclear fission splits a nucleus into smaller parts.

Front

What is the significance of the cosmic microwave background?

Back

It is the remnant radiation from the Big Bang, providing evidence for the universe's expansion.

Front

What is the relationship between mass and gravitational force?

Back

Gravitational force is directly proportional to the product of the masses.