Vocab portion of Science test for 9/19

combines both the speed and the direction that the object is moving

• relative motion

• frame of reference

• speed

• velocity

the amount of space covering the outside of a three-dimensional shape

• relative motion

• inertia

• surface area

• velocity

 the tendency of an object in motion to stay in motion or an object at rest to stay at rest

• relative motion

• inertia

• surface area

• velocity

The change in one object’s position compared to other objects' fixed position.

• relative motion

• frame of reference

• speed

• velocity

how fast an object's position changes over time

• relative motion

• frame of reference

• speed

• velocity

the objects you use to detect motion

• relative motion

• frame of reference

• speed

• velocity

a force which makes objects pull toward each other.

• force

• friction

• gravity

• acceleration

a force which makes objects pull toward each other.

• force

• friction

• gravity

• acceleration

when an object speeds up, slows down and changes direction

• force

• friction

• gravity

• acceleration

a force that occurs when two surfaces rub together. It slows objects or stops them from moving

• force

• friction

• gravity

• acceleration