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Science Exam Semester 1 Review

Total questions: 60

Worksheet time: 2hrs 58mins

Name
Class
Date
1.

What is the basic unit of length in the metric system?

a)

gram

b)

meter

c)

Liter

d)

cm3

2.

What is the basic unit of mass in the metric system?

a)

gram

b)

meter

c)

Liter

d)

cm3

3.

The metric system is based or scaled on units of:

a)

ten

b)

100

c)

1000

d)

inches

4.

A unit of length in the metric system is the:

a)

liter

b)

gram

c)

meter

d)

Newton

5.

Which unit would be best to measure the length of a pencil?

a)

meters

b)

centimeters

c)

kilometers

d)

decimeters

6.
240 cm = ___________ m
a)
2400
b)
24
c)
2.4
d)
0.24
7.
1000 m = ___________ km
a)
100
b)
10
c)
1
d)
0.1
8.
15.6 L = ___________ mL
a)
15,600
b)
156,000
c)
1,560,000
d)
15,600,000
9.
2804 mg = ___________ g
a)
0.2804
b)
2.804
c)
28.04
d)
280.4
10.

A car travels 120 miles in 12 hours. What is the car's speed?

a)

10 mph

b)

10 m/s

c)

240 mph

d)

240 m/s

11.

Speed in a given direction

a)

acceleration

b)

speed

c)

velocity

d)

average speed

12.

Miles per hour north is an example of

a)

average speed

b)

acceleration units

c)

velocity units

d)

calculating speed

13.

Mr. Smith is traveling from Houston, TX to Dallas, TX. It takes 4 hours to make the 224

mile trip. What is his velocity?

a)

56.5 miles per hour

b)

56 miles per hour

c)

55.65 yards per second

d)

56 yards per second

14.

If Sally is speeding through the parking lot at 18m/hr, and she travels 9 m, how long did it take her?

a)

2 m/hr

b)

0.5 hr

c)

2 m

d)

0.5 m

15.

Acceleration means that your object is _____.

a)

doing nothing

b)

moving in circles

c)

changing speed

16.

Match the graph to the description:

"The car is traveling at a constant speed."

a)
b)
c)
d)
17.
Which runner stopped for a rest?
a)
Albert
b)
Bob
c)
Charlie
18.
What does this graph represent?
a)
Constant Speed
b)
Acceleration
c)
Not moving
19.

What is this graph showing?

a)

At rest

b)

Acceleration

c)

Constant speed of 1 m/s

d)

Gradually speeding up

20.
If a 10 kilogram object accelerates suddenly at 15 m/s^2, how much force was applied to the object?
a)
150 Newtons
b)
15 Newtons
c)
150 kilograms
d)
100 kilograms
21.
Unit of mass
a)
m/s 2
b)
m/s
c)
newtons
d)
kg
22.
What is the SI unit used to measure force? 
a)

grams 

b)

newtons 

c)

kg/ m2

23.
Unbalanced forces make an object:
a)
Come to rest
b)
move at constant velocity
c)
accelerate
d)
explode
24.
"For every action, there is an equal and opposite reaction."
a)
Newton's 1st Law
b)
Newton's 2nd Law
c)
Newton's 3rd Law
d)
Newton's 4th Law
25.
Force = Mass x Acceleration
a)
Newton's 1st Law
b)
Newton's 2nd Law
c)
Newton's 3rd Law
d)
Newton's 4th Law
26.
The tendency of an object to resist changes in its motion is...
a)
inertia
b)
force
c)
acceleration
d)
velocity
27.
Any push or pull on an object.
a)
force
b)
velocity 
c)
inertia
d)
momentum
28.
The force that opposes motion between two surfaces in contact with each other.
a)
inertia
b)
friction
c)
momentum
d)
gravity
29.
The combination of all the forces acting on an object is the...
a)
net force
b)
action force
c)
reaction force
d)
balance force
30.

When two equal forces act in opposite directions on an object, they are called ______________________.

a)

frictional force

b)

balanced force

c)

centripetal force

d)

gravitational force

31.

When an unbalanced force acts on an object, the force ______________________.

a)

changes the motion of the object

b)

is cancelled by another force

c)

does not change the motion of an object

d)

is equal to the weight of the object

32.
An automobile you are riding in suddenly stops, but you continue to go forward.
a)
Newton's
1st
Law of Motion
b)
Newton's
2nd
Law of Motion
c)
Newton's
3rd
Law of Motion
33.
You push against a wall and the wall is pushing back on you.
a)
Newton's
1st
Law of Motion
b)
Newton's
2nd
Law of Motion
c)
Newton's
3rd
Law of Motion
34.

What is the acceleration of a 50 kg object pushed with a force of 500 newtons?

a)

100 m/s2

b)

25,000 m/s2

c)

10 m/s2

d)

25 m/s2

35.

This is an example of a -------- circuit.

a)

Series

b)

Parallel

c)

Combination

36.

This is an example of a -------- circuit.

a)

Series

b)

Parallel

c)

Combination

37.

In this circuit, the bulb(s) that light up are:

a)

1 only

b)

2 only

c)

1 and 2

d)

None of them

38.

In series circuit, there is only _____ path for electrons to flow.

a)

One

b)

Two

c)

Three

d)

Four

39.

If one of the light bulb in series circuit is taken off, what will happen to the other light bulb?

a)

The other light bulb will be on

b)

The other light bulb will be off

c)

The other light bulb will stay on

d)

Both light bulb will be on

40.

In a parallel circuit, if we remove one of the light bulb, what will happen to the other light bulb?

a)

The other light bulb will stay on.

b)

The other light bulb will be off

c)

Both light bulb will be on

d)

Both light bulb will be off

41.

What type of magnet that can turned on and off?

a)

electromagnet

b)

permanent magnet

c)

electricity

d)

battery

42.

Magnets on refrigerator cannot be turned off. Which type of magnets are they?

a)

electromagnets

b)

battery

c)

permanent magnets

d)

copper wire

43.

Why does the compass needle move when the electricity flows through the coiled wire?

a)

Because a magnetic field is not produced, which do not attract to the needle.

b)

Because a magnetic field is produced, which attracts the compass needle.

c)

Because the battery produced magnetic field.

44.

What is the role of the battery in the electromagnet?

a)

It provides light energy for the electromagnet.

b)

It provides magnetic field for the electromagnet.

c)

It provides sound energy for the electromagnet.

d)

It provides the power source for the electromagnet.

45.

How can we control an electromagnet?

a)

By turning the electricity on and off.

b)

By turning the kinetic energy on and off.

46.
This is a picture of a simple electromagnet. How can the electromagnet be made stronger?
a)
Add more coils of wire to the nail.
b)
Use a smaller battery.
c)
Reverse the poles of the magnet.
d)
Remove all the coils and the nail.
47.
In order for an electromagnet to be formed, an __________ current must pass through a coil of __________ wrapped around an ________ core.
a)
wire, iron, electric
b)
electric, wire, iron
c)
iron, electric, wire
d)
excited, hair, apple
48.

What do waves carry and transfer?

a)

Nothing

b)

Only Sound

c)

Only sunlight

d)

Energy

49.

The highest part of the wave is called the _______________.

a)

Amplitude

b)

Wavelength

c)

Trough

d)

Crest

50.

The bottom part of the wave is called trough.

a)

True

b)

False

51.

_________________________ is the distance between a point on one wave and the identical point of the next wave.

a)

Amplitude

b)

Frequency

c)

Crest

d)

Wavelength

52.

When the amplitude of a sound wave increases _______.

a)

the sound gets louder

b)

the sound gets lower

c)

the sound doesn't change

53.

Which transverse wave has the highest frequency?

a)

1

b)

2

c)

3

d)

4

54.
Carries energy from one place to another
a)
Waves
b)
Amplitude
c)
Frequency
d)
Crest
55.

The number of waves that passes a certain point in a set period of time

a)

Frequency

b)

Amplitude

c)

Wavelength

d)

Amplength

56.
What kind of wave is pictured below?
a)
compressional wave
b)
transverse wave
c)
sound wave
d)
mechanical wave
57.

Which one is an example of a transverse wave

a)

Punching a bag

b)

Loud Music

c)

Sneezing

d)

Water Waves

58.

Which one shows the amplitude of a wave?

a)
b)
c)
59.

A wave in which the wave’s medium is compressed in the same direction as the movement of the wave

a)

Transversal wave

b)

Transverse wave

c)

Frequency wave

d)

compressional wave

60.

What is the effect of two negatively charged objects coming near each other.

a)

The objects repel each other.

b)

The objects attract each other.

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