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WorksheetsGrade 7 Term 2 Review "Motion"
Total questions: 20
Worksheet time: 20mins
The figure shows the forces acting on a car moving at a constant speed. Which force would have to increase to make the car accelerate?
A
B
C
D
Which one of the statements describes the motion of the car?
It will be slowing down.
It will be stationary.
It will have a constant speed.
It will be speeding up.
The force that one surface exerts on another when the two rub against each other is called
gravity
friction
inertia
acceleration
The upward force acting on an object submerged in a fluid is called
drag
pressure
weight
buoyant force
The force that pulls falling objects toward Earth is called
air resistance
acceleration
gravity
free fall
When unbalanced forces act on an object
the object's motion does not change
the inertia of the object increases
the weight of the object decreases
the object accelerates
What is the net force on the box shown?
10 N to the left
10 N to the right
60 N to the left
50 N to the right
Why is the sand not yet sliding out of the dump truck?
Air resistance
Friction
Drag
Tiny leprechauns holding it in place
What forces are acting on a dropped book that falls to the floor?
Gravity only
Gravity and air resistance
Air resistance only
Friction only
Which ball will hit the ground first if dropped at the same time and at the same height in a perfect vacuum?
Metal first, then plastic, then wood
Wood first, then plastic, then metal
Metal, then wood, then plastic
They will all hit at the same time
Your computer is sitting at rest on your desk. Which of the following statements best describes this situation?
There are no forces acting on the computer.
The computer pushes on the desk only.
The desk pushes on your computer only.
The forces acting on the computer are balanced.
A change to an objects' motion is caused by
Balanced forces
Unbalanced forces
Acceleration
Velocity
Which is affected by where you are in the universe?
Mass
Weight
Which equation is correct?
weight = mass x gravity
mass = weight x gravity
gravity = weight x mass
What is constant no matter where you are in the universe?
Weight
Mass
Gravity
This type of force resists motion between two surfaces that are pressed together
contact
gravity
friction
It is much more difficult to move a dresser full of clothes than an empty dresser. Why?
An object in motion stays in motion.
It takes more force to move an object with more mass.
It takes more friction to move the empty dresser.
