Science Unit 6

A teacher walks by a student's desk. The desk was in front of the teacher and now it is behind the teacher. What term describes the change in the teacher's position compared to the desk?

• velocity

• relative motion

• relative position

• frame of reference

Which object requires the least amount of force to move it 5 meters?

• golf ball

• soccer ball

• bowling ball

• table tennis ball

Two students push boxes with the same mass for 10 seconds. Which student moved her box a greater distance?

• the student who pushed with less force

• the student who had a lesser body mass

• the student who pushed with more force

• the student who had a greater body mass

A student wants to describe the velocity of a moving car. What information does the student need?

• speed and position

• speed and direction

• direction and position

• direction and relative motion

A train goes around a corner at the same speed it was traveling on a straight track. What is this an example of?

• speed

• acceleration

• relative motion

• frame of reference

A car travels 160 miles in 2 hours. What is the average speed (mph) of the car (mph= miles per hour)?

• 0.01 mph

• 80 mph

• 160 mph

• 320 mph

Which of the following is not an example of acceleration?

• A train slowing down to a stop

• A train slowing down to a stop

• A train moving at the same speed in the same direction

• A train increasing its speed.

Which force pushes or pulls a plane forward?

• drag

• gravity

• lift

• thrust

What happens if balanced forces are applied to a moving object?

• The object stops moving

• The object moves faster in the same direction

• The object moves slower in the same direction

• The object keeps moving at the same speed and direction

Which best describes the motion of a guitar string as it is plucked?

• an object moving back and forth

• an object moving in a straight line

• an object moving on a curved path

• an object moving in circular motion