Vocabulary
More Vocabulary
Calculations
Graphs
Miscellaneous
100
What theory states that Earth's plates move slowly in various directions?
Plate tectonics
100
When an object slows down, what is this called?
deceleration
100
Speed equals distance divided by what?
Time
100
If a graph shows distance in meters and time in seconds, what would be the unit for speed?
meters per second
100
What is the basic SI unit of length?
meter
200
Knowing the speed and direction of an object tells you its what?
velocity
200
If an object's speed does not change, its speed is said to be what?
Constant
200
A car travels for 2 hours at 50 miles per hour. How far does it travel?
100 miles
200
What formula allows you to calculate slope?
slope = rise / run
200
Changing direction is an example of what?
acceleration
300
What are the major pieces that make up Earth's surface called?
Plates
300
The total distance an object travels divided by the total time tells what about the object? (be specific)
Average speed
300
Acceleration equals change in speed divided by what?
Time
300
On a distance versus time graph, what type of line represents an object that is not moving at all?
horizontal
300
An object is said to be in motion when its distance from another object does what?
changes
400
What is the rate at which velocity changes?
acceleration
400
An object's speed at a specific moment in time is called its what kind of speed?
instantaneous speed
400
If a plate moves 3 centimeters every year, how far will it move in 1000 years?
3000 cm = 30 m
400
The steepness of a line on a graph is called what?
slope
400
Where is the international system of units used?
All around the world; scientific community
500
What is a place or object used for comparison to determine if something is moving?
reference point
500
What was the supercontinent that existed 225 million years ago?
Pangaea
500
A car travels 90 km in 2 hours. What is its average speed?
45 km/hr
500
If the slope stays the same in a distance versus time graph, what happens to the speed of the object?
it remains constant
500
How is the moon accelerating?
It constantly changes direction
M
e
n
u