WorksheetsReview 7.P.1.1, 1.2
Total questions: 15
Worksheet time: 8mins
What best describes motion?
Change of speed over time
Change in position over time
Change of acceleration over time
Change in velocity over time
Why do scientists use a reference point?
To determine if an object is in motion
To find information in the library
To know where they are
To measure speed
Which best explains why the cyclists (#3) cannot be used as a good reference point?
It is heading in the wrong direction
It is moving too slow
It is moving too fast
A good reference point should not move
A mother is on the train. To the boy, she looks like she is moving. To the mother, she isn’t. Why are the perspectives different?
Distance
Frame of reference
Reference point
Speed
What is the average speed of a cheetah that sprints 100m in 10s?
1m/s
10mph
10m/s
100m/s
The rollercoaster travels at 100mph. How long will it take to travel 200 miles?
1 hour
2 hours
0.5 hours
4 hours
You are riding your bike, from point A to B and then to C. Which number shows the displacement from your starting point to point C?
3 m
4 m
5 m
7 m
When one force in a pair is greater than the other, we call this:
Balanced force
Unbalanced force
Magnitude
Friction
When Anna tells her father that her bicycle is hard to pedal, he oils the chain. How does this make her bike easier to ride?
Friction on the bike has increased
Friction on the bike has decreased
Gravity on the bike has increased
Gravity on the bike has decreased
A person is pushing a lawnmower. Which best describes what is occurring?
Inertia is being applied to the lawnmower
Force is being applied to the lawnmower
There is no friction acting on the lawn mower
There is no gravity acting on the lawn mower
Some students are playing tug of war. A team is pulling to the right with 400 N of force. B team is pulling to the left with 140 N of force. What is the net force and what direction will the rope move?
260 N to the right
260 N to the left
540 N to the right
540 N to the left
Two girls are pulling on opposite ends of a thick rope. Both girls are pulling on the rope with the same force but in opposite directions. If both girls continue to pull with the same force, what will MOST likely happen?
One girl will pull the other toward her
Both girls will stay in the same place
Gravity will cause the rope to sag
The rope will break
In magnets like poles ________ and opposite poles ________
attract; attract
attract; repel
repel; attract
repeal; repel
John stands at the top of a steep cliff and pushes a ball over the edge with his foot. Which force causes the ball to fall off the cliff.
Mass
Gravity
Friction
Air resistance
A train is moving along a track. If the forces acting on the train are balanced, how will its motion be affected?
Change direction
Continue, unchanged
Speed up
Stop
