Midterm Review

A variable that stays the same throughout an experiment is called

• constant/control
• independent variable
• dependent variable
• unknown

A variable that you can change in an experiment is called

• constant/control
• independent variable
• dependent variable
• unknown

A variable that is measured in an experiment, or it changes due to another variable, is called

• constant/control
• independent variable
• dependent variable
• unknown

An educated guess based on a background research is

• experiment
• hypothesis
• conclusion
• data

A passenger, in the rear seat of a car, is at rest relative to

• a pedestrian on a corner ahead
• the wheels of the car
• the side of the road
• the driver

An walks 1 mile from her front porch and returns to the front porch 30 min later. What is her total displacement?

• 0 mile
• 1 mile
• 2 mile
• 30 minutes

The difference between distance and displacement is

• distance has no direction, while displacement does
• distance is the total measurements between 2 points
• displacement is the shortest distance between two points
• all of the above

Speed is

• the ratio of acceleration with respect to time
• the ratio of distance to amount of time an object moves
• the direction the object moves
• the motion of the object

Instantaneous speed is measured

• overall speed of the trip
• average speed of the trip
• speed at a particular moment

The slope of a line on a distance vs. time graph represents

• distance
• displacement
• speed
• acceleration