WorksheetsUnit 5.3
Total questions: 28
Worksheet time: 14mins
Fill in the blanks
_________ pushes against a moving object, such as
a car, and slows it down. The larger the _______ area of
the moving object, the more resistance there is.
Air resistance / surface
Water resistance / contacting
Air resistance /
streamlined
Friction / front
TRUE or FALSE:
Air resistance also pushes against falling objects and slows them down.
TRUE
FALSE
A parachute uses air resistance to work because?.
It is very light and smooth
It is heavy weight and has a very big surface area
It is very light weight
and has a very big surface area.
It is strong and durable
The force between two surfaces that are trying to slide past each other is called?
Upthrust
Friction
Air resistance
water resistance
Marcus is riding a bike along a gravel path. The bike's tyres and the gravel path try to slide past each other. Is this the good or bad effect of friction?
Good
Bad
TRUE or FALSE
Air resistance and water resistance are types of friction.
TRUE
FALSE
Fill in the blank
Both air resistance and water resistance are sometimes called ________
friction
drag
upthrust
non-contact forces
What will happen when you push a football in a swimming pool?
It will blow up
It will stay down under water
It will float back on to the surface
It will sink down to the bottom
Why do swimmers try to copy the streamlined shape of fish?
Because it causes less disturbance of the water and therefore less drag
Because it will help them float in the water
Because it reduces upthrust and makes them look sleek
Because streamlined shape help increase water resistance
What do we call the force that pushes things up in water?
drag
Water resistance
Buoyancy
Air resistance
TRUE or FALSE
Air resistance and water resistance are types of friction.
TRUE
FALSE
What do we call air resistance, water resistances, upthrust, drag?
Non-contact forces
Contact forces
Normal forces
attract forces
You and your friends are playing with the toy parachutes.
Name two forces that acted on your parachute after you dropped it
friction and air resistance
drag and air resistance
Gravity and normal force
Gravity and air resistance
Label the two forces on the force diagram
A. Gravity
B. Friction
A. Gravity
B. Buoyancy
A. Gravity
B. Water resistance
A. Normal force
B. Upthrust
Which parachute, A or B, will likely to fall faster?
A
B
A dolphin can move very fast through the sea. Choose two reasons why it can do this
Smooth skin
Fins and Gills
Streamlined body
It's a mammal
Which force slows down these lorries because of their size
Gravity
Air resistance
Upthrust
How do you think the design feature of sport-cars help them travel faster?
They are lighter than normal cars
Smooth and shiny paint reduce friction between the car and the road
Streamlined body helps reduces air resistance
What is force A?
Gravity
Normal force
Friction
Air resistance
What is force B?
Gravity
Normal force
Friction
Air resistance
What is force C?
Gravity
Normal force
Friction
Air resistance
What is force D?
Gravity
Normal force
Friction
Air resistance
What is force A?
Gravity
Thrust
Lift
Drag
What is force B?
Gravity
Thrust
Lift
Drag
What is force C?
Gravity
Thrust
Lift
Drag
What is force D?
Gravity
Thrust
Lift
Drag
Which two forces are natural forces?
Gravity and Lift
Thrust and Gravity
Lift and Thrust
Gravity and Drag
Which two forces are forces provided by the aeroplane?
Gravity and Lift
Thrust and Gravity
Lift and Thrust
Gravity and Drag
