Universe Vocabulary

Question 1

Newton’s First Law

Answer 1

The motion of an object does not change unless a force is applied to it

Question 2

Force

Answer 2

Any push or pull on an object

Question 3

The Law of Gravity

Answer 3

There is an attraction between any two objects

Question 4

Unbalanced Forces

Answer 4

A force that changes the position, speed or direction of the object to which it is applied.

Question 5

Air Resistance

Answer 5

The force that opposes objects being pulled to the Earth by gravity

Question 6

Free Fall

Answer 6

Occurs when only the force of gravity is acting on an object.

Question 7

The Law of Universal Gravitation

Answer 7

All objects in the universe attract each other through gravitational force.

Question 8

Mass

Answer 8

The amount of matter in an object

Question 9

Weight

Answer 9

How strong gravity pulls on an object (the amount of gravitational force)

Question 10

Spring Tide

Answer 10

Occur 2 times a month, during a full and new moon when the Earth, Sun, and Moon are lined up.

Question 11

Neap Tide

Answer 11

Occur at the first and third quarters of the Moon when the Sun and Moon pull at right angles to each other.

Question 12

Rapid Expansion of the Universe Theory

Answer 12

The theory states that the universe originated sometime between 10 billion and 20 billion years ago from an enormous explosion of a small volume of matter at extremely high density and temperature.

Question 13

Scientific Theory

Answer 13

An explanation or model backed by results obtained from many tests or experiments.