Science Chapter 7

Question 0

Reference point

Answer 0

A place or object used for comparison to determine if an object is in motion.

Question 1

Motion

Answer 1

The state in which one object’s distance from another is changing.

Question 2

International System of Units(SI)

Answer 2

A system of units used by scientists to measure the properties of matter.

Question 3

Speed

Answer 3

The distance an object travels per unit of time.

Question 4

The speed equation

Answer 4

Speed: distance/Time

Question 5

Average speed

Answer 5

The overall rate of speed at which an object moves; calculated by dividing the total distance an object travels by the total time.

Question 6

Average speed formula

Answer 6

As: total distance/ total time

Question 7

Instantaneous speed

Answer 7

The speed of an object at one instant of time.

Question 8

Velocity

Answer 8

Speed in a given direction.

Question 9

Slope

Answer 9

The steepness of a graph line; the ratio of the vertical change (the rise) to the horizontal change (the run).

Question 10

Acceleration

Answer 10

Rate at which velocity changes.

Question 11

Distance

Answer 11

Length of the path between two points.