# Science 8th Grade Trivia Quiz

25 Questions | Total Attempts: 148  Settings  Are you in eighth grade and have been a hard time when it comes to science? If so then the quiz below is perfect for you as it is designed to help you review all that you have covered this year while giving you an idea of how your mid-terms may be set up. Give it a shot and keep on revising!

Related Topics
• 1.
Objects sink in water when they have greater
• A.

Mass than water.

• B.

Weight than water.

• C.

Density than water.

• D.

Volume than water.

• 2.
The concept that pressure in a fluid decreases as the speed of fluid increase is called
• A.

Pascal's principle.

• B.

Archimedes' principle.

• C.

Bernoulli's principle.

• D.

Newtons first law

• 3.
The concept that an increase in pressure on a confined fluid is transmitted equally to all parts of the fluid is
• A.

Pascal's principle.

• B.

Bernoulli's principle.

• C.

Archimedes' principle.

• D.

Newtons first law

• 4.
The weight of an object that floats has the same values as
• A.

Objests density

• B.

Objects volume

• C.

Objects mass

• D.

Bouyant force

• 5.
If you devide the mass of an object by its volume you will know the objects
• A.

mass

• B.

Density

• C.

Weight

• D.

Pressure

• 6.
If you divide the force exerted on a surface by the total area of the surface you will find
• A.

Density

• B.

lift

• C.

Bouyant force

• D.

Pressure

• 7.
Archimedes' Principle states that the buoyant force on an object is equal to the
• A.

Weight of the object

• B.

Volume of the fluid the object displaces.

• C.

Volume of the object.

• D.

Weight of the fluid the object displaces

• 8.
In a car's hydraulic brake system, the pistons that push against the brake pads have
• A.

A smaller area than the pistons connected to the brake pedal.

• B.

The same area as the pistons connected to the brake pedal.

• C.

A larger area than the pistons connected to the brake pedal.

• D.

The same area as the pistons connected to the brake pedal.

• 9.
Snowshoes allow you to walk on the snow without sinking because they
• A.

• B.

Distribute the force of your weight over a larger area.

• C.

Reduce the friction between your feet and the snow.

• D.

Create a buoyant force that causes you to not sink.

• 10.
Objects sink in water when they have greater
• A.

Mass than water.

• B.

Density than water.

• C.

Weight than water.

• D.

Volume than water.

• 11.
Hydraulic systems, such as car brakes, take advantage of
• A.

Archimedes' principle.

• B.

Pascal's principle.

• C.

Bernoulli's principle.

• D.

Gravity

• 12.
To design a successful airplane wing, the Wright brothers needed to apply
• A.

Bernoulli's principle.

• B.

Archimedes' principle.

• C.

Pascal's principle.

• D.

Newton's first law.

• 13.
Movement of objects toward areas of lower air pressure illustrates
• A.

Pascal's principle.

• B.

Centripetal force.

• C.

Archimedes' principle.

• D.

Bernoulli's principle.

• 14.
Which of the following is NOT an example of a fluid?
• A.

Sunlight

• B.

Water

• C.

Helium

• D.

Air

• 15.
The buoyant force pushes objects
• A.

Upwards

• B.

Downwards

• C.

Sideways

• D.

In all directions

• 16.
If an object weighing 10 N rests on a surface with an area of 2 m2, the pressure that the object exerts is
• A.

5 Pa.

• B.

2 Pa.

• C.

0.20 Pa.

• D.

20 Pa.

• 17.
To design a successful airplane wing, the Wright brothers needed to apply
• A.

Archimedes' principle.

• B.

Pascal's principle.

• C.

Bernoulli's principle.

• D.

Newton's first law.

• 18.
At which elevation is air pressure greatest?
• A.

1,000 m

• B.

500 m

• C.

100 m

• D.

10 m

• 19.
You place a block of wood in a beaker and it floats.  What can you say about the buoyant force on the block?
• A.

It is equal to the blocks weight.

• B.

It is less than the blocks weight.

• C.

It is greater than the blocks weight.

• D.

It is equal to weight of the surrounding water.

• 20.
You carefully drop a stone into a beaker of water.  The stones sinks to the bottom and water spills out.  What can you say about the weight of the displaced water.
• A.

It is greater than the weight of the stone.

• B.

It is equal to the weight of the stone.

• C.

It is less than the weight of the stone.

• D.

It is equal to the weight of the water still in the beaker.

• 21.
Why does an airplane rise in the air.
• A.

It experiences a buoyant force because it is less dense than the air.

• B.

The moving air above and below the wings creates an unbalanced force that pushes the plane up.

• C.

The pressure above the wings is greater than the pressure below the wings.

• D.

The airplanes cabin is pressurized.

• 22.
A helium balloon rises because the helium
• A.

Is hotter than the surrounding air

• B.

Is colder than the surrounding air

• C.

Is less dense than the surrounding air

• D.

Is more dense than the surrounding air

• 23.
The inward pressure of the atmosphere on your hand is balanced by the
• A.

• B.

• C.

Upward pressure of the atmosphere on your hand.

• D.

• 24.
The SI unit for pressure is
• A.

Meters per square seconds (m/s2).

• B.

Meters per second (m/s).

• C.

Newtons (N).

• D.

Newtons per square meter (N/m2), also called the pascal.

• 25.
The upward force on a wing that results from differences in pressure above and below the wing is called
• A.

Lift.

• B.

Thrust.

• C.

Hydraulic force.

• D.

Buoyancy.