Science Practice Test for Final Test

Science Practice Test for Final Test

By Yoshy Faweta

FRICTION

Force that opposes motion when two surfaces are in contact

Multiple Choice

Sophia pulls a smooth plastic box along a smooth surface using a spring balance.

If she pulls the same box along a rough surface, what will happen to the reading on the balance?

• It will stay the same.

• It will be lower.

• It will be higher.

Multiple Choice

How smooth a material is affects the amount of friction. Look at the three road surfaces below.

A car is driven over each of them.

Which of the road surfaces will cause the lowest amount of friction?

• A

• B

• C

Multiple Choice

It is a spring balance.

A spring balance is an instrument used for measuring ____

• length

• volume

• force

• mass

Multiple Choice

Which of these instruments is used for measuring friction?

• Weighing scale

• Ammeter

• Spring balance

• Ruler

Fill in the Blanks

​

Three different materials were dragged along a wooden table. Look at the reading on the spring for each of the different materials.

​

Which material causes the most friction?

​

Multiple Choice

Three different materials were dragged along a wooden table. Look at the reading on the spring for each of the different materials.

Which material causes the most friction?

• A

• B

• C

Multiple Select

Which surface affects the amount of friction?

(2 answers)

• wooden block

• table

• spring balance

• hook

Ice skates have smooth metal blades on the bottom.

​

What is the purpose of the blade?​

​

Multiple Choice

Ice skates have smooth metal blades on the bottom.

​

What is the purpose of the blade?​

• It improves the balance of the skater on the ice.

• It decreases the weight of the skater.

• It increases friction between the skater and ice.

• It reduces friction between the skater and ice.

Multiple Choice

Driving in the rain can be more dangerous than driving in dry weather.

Why can it be more dangerous?

• There is no friction.

• There is less friction

• There is more friction.

• There is the same amount of friction.

Multiple Choice

The rougher the materials, the ____ the amount of friction between two surfaces.

• smaller

• greater

• faster

• slower

Multiple Select

Useful friction are shown by pictures ____.

• brake of bicycle

• ice skating

• push a box

• ladder and floor

AIR RESISTANCE

Frictional force that act on an object as it moves through air

Multiple Select

If the material and mass of the parachute are the same, which two parachutes will reach the ground at the latest?

• A

• B

• C

• D

There are 3 parachutes with different

surface area​

Multiple Choice

• X

• Y

• Z

Multiple Choice

Based on the data in the table, complete the conclusion below.

THE LARGER THE SURFACE AREA OF THE PARACHUTE, THE ____ IT REACHES THE GROUND.

• SLOWEST

• FASTEST

Fill in the Blanks

Multiple Choice

• A

• B

So car B can reduce air resistance that against its movement

​Car B is designed in a streamlined shape​

Fill in the Blanks

W= m x g

​

m = W:g g= W:m​

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