Unit 3 Lesson 4 - Principles of Force and Motion

A change in position is ________________.

• motion

• unbalanced forces

• balances forces

• gravity

The location of an object is its ________________

• motion

• gravity

• friction

• position

A _______________ is a push or a pull.

• gravity

• force

• position

• friction

A force that acts between two objects or surfaces that are rubbing against each other is called ____________.

• friction

• gravity

• position

• oxygen

_______________ is the force of attraction between two objects. It is always a pull.

• Friction

• Gravity

• Unbalanced forces

• Position

__________________ do not change the motion of an object.

• Gravity

• Friction

• Unbalanced forces

• Balanced forces

___________________ change the motion of an object.

• Balanced forces

• Position

• Unbalanced forces

• Directions

All motion starts, stops, or changes because of a ___________.

• force

• friction

• gravity

• position

We can describe the position of an object by ___________.

• using the directions north, south, east, and west

• using other objects

• both of these

Objects move in different ways. For example ________.

• Some objects move faster or slower than others.

• Some objects move in only one direction and some change directions.

• Some objects move in a motion that repeats.

• All of these