Quiz about Science 8 First Quarter Reviewer

Question 1

Kinetic friction keeps stationary objects from sliding against each other.

Accepted Answer

F

Answer

T

Question 2

Gas to Liquid is the process called sublimation.

Accepted Answer

F

Answer

T

Question 3

Potential Energy is the energy of motion.

Accepted Answer

F

Answer

T

Question 4

Light of a single wavelength is monochromatic.

Accepted Answer

T

Answer

F

Question 5

Contact Forces are forces that act over a distance, such as gravitational, electrostatic, and magnetic forces.

Accepted Answer

F

Answer

T

Question 6

Weight is the gravitational force acting on an object.

Accepted Answer

T

Answer

F

Question 7

Calorimetry is the study and measurement of heat quantities.

Accepted Answer

T

Answer

F

Question 8

Sound is a transverse wave that has a regular up and down movement that is perpendicular to the direction of the wave itself.

Accepted Answer

F

Answer

T

Question 9

Temperature is the measures the hotness or coldness of a substance or object.

Accepted Answer

T

Answer

F

Question 10

Radiation occurs when heat is transported by electromagnetic waves.

Accepted Answer

T

Answer

F

Question 11

A law of motion defined or an object at rest will stay at rest, while an object in motion will stay in motion unless acted upon by unbalance force.

Accepted Answer

Law of Inertia

Answer

Law of Interaction

Answer

Law of Acceleration

Answer

Law of Conservation of Energy

Question 12

This refers to a push or pull.

Accepted Answer

Force

Answer

Momentum

Answer

Acceleration

Answer

Inertia

Question 13

Which of the following illustrations show about balanced force?

Accepted Answer

A

Answer

B

Answer

C

Answer

D

Question 14

What force causes a change in motion?

Accepted Answer

Unbalanced

Answer

Balanced

Answer

Push

Answer

Pull

Question 15

Which of the following situations shows work done?

Accepted Answer

All of the above.

Answer

A girl pulling her cart.

Answer

A man lifting a box to be placed on a table.

Answer

A mango fruit falling from a branch.

Question 16

What is the SI unit for work?

Accepted Answer

Joule

Answer

Newton

Answer

Watt

Answer

Horsepower

Question 17

Which of the following conditions about work is FALSE?

Accepted Answer

Work is done if the force you exert does not make the object move in the same direction as the force you exerted.

Answer

Work is done if the force you exert does make the object move in the same direction as the force you exerted.

Answer

Work is done if the object you push moves a distance in the direction towards which you are pushing.

Answer

No work is done if the force you exert does not make the object move.

Question 18

When energy is stored, it is called __________.

Accepted Answer

Potential energy

Answer

Kinetic energy

Answer

Generator

Answer

Battery

Question 19

Energy in motion is called _________.

Accepted Answer

Kinetic energy

Answer

Potential energy

Answer

Thermal energy

Answer

Both A and B

Question 20

Which refers to the rate at which work is done?

Accepted Answer

Power

Answer

Energy

Answer

Work

Answer

Force

Question 21

A 3 L bottle of water is placed in refrigerator, and heat is removed from the water. The number of collision that occur between water molecules __________.

Accepted Answer

decreases

Answer

disappears

Answer

increases

Answer

stays the same

Question 22

Suppose a woman is pushing a grocery cart with a 400 N force along the 5 meters aisle, how much work is done in pushing the cart from one end of the aisle to the other?

Accepted Answer

2,000 J

Answer

3,500 J

Answer

1,500 J

Answer

1,000 J

Question 23

It refers to the size or strength of the force.

Accepted Answer

Magnitude

Answer

Direction

Answer

Line of action

Answer

Point of application

Question 24

Refers to the measure of the average kinetic energy of the particles and it does not depend on the mass of the object.

Accepted Answer

Temperature

Answer

Heat

Answer

Thermal Energy

Answer

All of the above

Question 25

A thermal energy which is being given up by a body or transferred from one body to another.

Accepted Answer

Heat

Answer

Temperature

Answer

Energy

Answer

Work

Question 26

It is the measure of the intensity of the heat in a substance.

Accepted Answer

Temperature

Answer

Heat

Answer

Energy

Answer

Work

Question 27

A book that has a mass of 2 kg is on the floor. If the book is lifted from the floor to the top shelf which is 3 meters from the floor, how much work is done on the floor?

Accepted Answer

58.8 N

Answer

19.6 N

Answer

20.5 N

Answer

38.6 N

Question 28

He is a one of the great scientists who studied the nature of motion.

Accepted Answer

Isaac Newton

Answer

Albert Einstein

Answer

Ernest Rutherford

Answer

Charles Darwin

Question 29

Which of the following describes a force?

Accepted Answer

a push or pull or both

Answer

a pull only

Answer

a push only

Answer

neither a push nor a pull

Question 30

What is the unit of force in metric system?

Accepted Answer

newtons

Answer

calorie

Answer

joules

Answer

pounds

Question 31

How do forces occur?

Accepted Answer

in pairs

Answer

in triplets

Answer

by themselves

Answer

as single quantity

Question 32

When you move a chair across the floor, what force must your push be stronger than?

Accepted Answer

friction

Answer

magnetic

Answer

normal

Answer

tension

Question 33

Which force always pulls the objects to the ground?

Accepted Answer

gravitational

Answer

applied

Answer

friction

Answer

tension

Question 34

Which has more mass, a kilogram of cotton or a kilogram of iron?

Accepted Answer

the same mass

Answer

the iron

Answer

the cotton

Answer

cannot be determined

Question 35

Which has the greatest inertia?

Accepted Answer

airplane

Answer

car

Answer

jeepney

Answer

bike

Question 36

All of the following apply the third law of motion EXCEPT .

Accepted Answer

taking out ketchup

Answer

kicking a ball

Answer

rowing a banca

Answer

throwing a stone

Question 37

Which Newton's law explains when a man is pushed forward in the car as it stops?

Accepted Answer

1st law

Answer

2nd law

Answer

3rd law

Answer

2nd and 3rd laws

Question 38

A sound wave travels through the air and hits a glass of water. Which of the following happens when the sound wave moves from the air into the glass?

Accepted Answer

It travels slower.

Answer

It gets louder.

Answer

It gets quieter.

Answer

It travels faster.

Question 39

What is the acceleration of a 60 kg object pushed with a force of 1000 N?

Accepted Answer

2040 N

Answer

2030 N

Answer

2050 N

Question 40

Find the work done on a cart by a shopper as he pushes it with a force of 36 N downward from the horizontal at a distance of 30m.

Accepted Answer

1080 J

Answer

580 J

Answer

1580 J

Answer

2080 J

Question 41

A car with a mass of 50 kg is moving with a velocity of 5 m/s. Calculate its kinetic energy.

Accepted Answer

625 J

Answer

465 J

Answer

535 J

Answer

775 J

Question 42

A 80.0 kg man climbs hand over hand up a rope to a height of 12.09 m. How much potential energy does he have at the top?

Accepted Answer

9478.56 J

Answer

3456.56 J

Answer

4256.76 J

Answer

7564.67 J

Question 43

A gym instructor does work equal to 600 J on a barbell in 2 s. What is the amount of power exerted on it?

Accepted Answer

300 W

Answer

100 W

Answer

200 W

Answer

400 W

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