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WorksheetsAir and Water resistance
Total questions: 36
Worksheet time: 26mins
Which two of these forces act on parachutes?
Air Resistance
Gravity
Thrust
Kinetic Energy
Another name for air resistance is...
Buoyancy
Streamline
Gravity
Drag
The larger the surface area of the moving object, the ___________ air resistance there is.
Less
More
Longer
Quicker
What causes an object to fall faster?
Smaller surface area
Larger surface area
If it has a parachute
If it is softer
Air resistance pushes against falling
objects and __________________.
Speeds them up
Keeps them afloat
Slows them down
Spins them
The larger the parachute the ____________
Less air resistance
More surface tension
Less drag
More drag
Which has more air resistance?
Air resistance is a force caused by...
Water pushing against moving objects
Air pushing against moving objects
Gravity pushing against moving objects
Normal force pushing against moving objects
The more streamlined an object is, the...
More air resistance
Less air resistance
Slower air resistance
Faster air resistance
When dropped from the same distance, which will fall to the floor faster?
Look at the pictures of the cars. Which car will have the most air resistance force acting upon it? They will be moving at the same speed.
All will have equal air resistance force.
What is a parachute designed to maximize?
Gravity
Air Pressure
Air Resistance
Thrust
Why are wings on airplanes curved at the top?
To make the air go faster over the top of the wing. This lowers the amount of pressure on the wing.
To make the pressure on top of the wing greater
To make it look cool
That was the only model they had
Complete the sentence.
It is not the difference in gravity that causes objects to fall at different speeds, it’s the difference in the amount of__________________.
Gravity
Mass
Air resistance
Can water resistance be reduced ?
Yes
No
What is water resistance ?
friction between moving object in water
gravity in water
pulling force
friction between moving object in air
How a swim suit help a swimmer to swim in water ??
Which of the given shapes will touch to the bottom first ??
Why do sharks not find it difficult to swim in water
What makes water resistance similar to surface friction ?
slows things down
increases the friction
decreases the surface area
increases the surface area
Objects #1, #2, #3, and #4 are sliding across the table. All blocks move at the same speed of 2 m/s. The blocks have different masses.
Which block has the greatest air resistance force acting upon it?
Block #1
Block #3
Block #4
All will have equal air resistance force.
Blocks #1, #2, #3, and #4 have equal mass. All four blocks slide across the table with a speed of 2 m/s. Which block has the lowest air resistance force acting upon it?
Block #1
Block #2
Block #4
All have equal air resistance force.
Blocks #1, #2, #3, and #4 have equal mass. All four blocks slide across the table with a speed of 2 m/s. Which block has the greatest air resistance force acting upon it?
Block #1
Block #2
Block #4
All have equal air resistance force.
Where will the airplane will be affected by the greatest air resistance force?
Moving on the runway (at the airport) at 100 m/s.
Flying at 2000 m altitude at 100 m/s
Flying at 5000 m altitude at 100 m/s
The airplane is affected by equal air resistance force at all three places.
What is drag?
Friction due to surfaces touching
When an objects speed is constant because of air resistance as it falls
Friction due to a fluid
Things that bring you down
Drag decreases with speed:
True
False
What force ultimately slows the roller coaster to a stop?
Applied
Normal
Friction
Gravitational
What is true about this picture?
the forces are balanced
the net force is 10N
The net force is 3 N
The net force is 7N
Friction is a
CONTACT force
NONCONTACT force
A body which offers very little resistance to the flow of air or water around it, is called:
trimlined shape
streamlined shape
streaklined shape
steamlined shape
The friction between two surfaces does not depend on one of the following. This one is:
amount of surface area of the two objects which is in contact with each other.
weight of the object which tends to move on the surface of other object
degree of smoothness of surfaces of two objects in contact with each other.
degree of roughness of surfaces of two objects in contact with each other
