Astronomy Module 3 Review Part 1

Front

What is the acceleration of gravity used to compare?

Back

How small objects speed up when falling.

Front

What happens when an electron drops from a higher to a lower energy level?

Back

Emission of light occurs.

Front

What does the variable 'G' represent in Newton's Universal Law of Gravitation?

Back

Universal constant for gravity.

Front

What is the Doppler Effect?

Back

A change in frequency due to the relative motion of a wave source and an observer.

Front

What shape do planets orbit the Sun in?

Back

Ellipse.

Front

What is gravity?

Back

A force that attracts two bodies towards each other.

Front

What is the speed of light?

Back

Approximately 299,792 kilometers per second.

Front

What is an atom?

Back

The basic unit of a chemical element.

Front

What is the difference between mass and weight?

Back

Mass is the amount of matter in an object; weight is the force exerted by gravity on that mass.

Front

What is a wave?

Back

A disturbance that transfers energy through space or matter.