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QA2 Review

Total questions: 59

Worksheet time: 1hrs 27mins

Name
Class
Date
1.

What does Newton's first law state about an object's motion?

a)

An object's motion can change without any force acting on it.

b)

A force is needed to keep an object moving.

c)

An object's motion cannot change unless a force acts on it.

d)

Friction is the only force affecting an object's motion.

2.

According to Newton's second law, what happens to the acceleration of an object if the force applied to it increases?

a)

The acceleration decreases

b)

The acceleration remains the same

c)

The acceleration increases

d)

The acceleration becomes negative

3.

What does Newton's third law state about forces?

a)

Forces act independently of each other

b)

Forces always result in motion

c)

Every force has an equal and opposite reaction force

d)

Forces are directly proportional to mass

4.

An object moves with the same motion as the car until something stops it.

a)

True

b)

False

5.

When one object exerts a force on another, what happens according to Newton's third law?

a)

The object doesn't react

b)

The other object applies an equal and opposite force

c)

The other object applies a different sized force

d)

The other object applies a force in the same direction

6.

What force is responsible for slowing down a rolling ball on the ground?

a)

Gravity

b)

Magnetism

c)

Friction

d)

Electromagnetic Force

7.

Which law of motion describes an object's resistance to a change in its motion?

a)

Newton's 1st Law

b)

Newton's 2nd Law

c)

Newton's 3rd Law

d)

None of these

8.

When forces acting on an object are balanced, what happens to the object's motion?

a)

The object accelerates

b)

The object moves in a circular path

c)

The object slows down

d)

The object's motion remains unchanged

9.

Which law of motion states that the force required to accelerate an object is directly proportional to its mass?

a)

Newton's 1st Law

b)

Newton's 2nd Law

c)

Newton's 3rd Law

d)

None of these

10.

What type of force is needed to change an object's motion?

a)

Balanced Forces

b)

Frictional Forces

c)

Gravitational Forces

d)

Unbalanced Forces

11.

According to Newton's 2nd Law, what happens to acceleration if force remains constant but mass increases? The acceleration will _____.

a)

decrease

b)

increase

c)

remain constant

d)

become zero

12.

Only objects that have balanced forces can have Newton's laws of motion applied to them.

a)

True

b)

False

13.

Which law of motion describes the phenomenon where forces always occur in pairs?

a)

Newton's 1st Law

b)

Newton's 2nd Law

c)

Newton's 3rd Law

d)

None of these

14.

What happens to the speed of an object as it falls freely under the influence of gravity (ignoring air resistance)?

a)

It remains constant

b)

It decreases

c)

It increases

d)

It first increases, then decreases

15.
Football A has a greater mass than football B.  Which football will have greater acceleration when both are thrown with the same force in the same direction?
a)
Football A
b)
Football B
c)
They will have the same acceleration
d)
Mass has no effect on acceleration
16.

The nozzle of a rocket is pointed downward so that as fuel is ignited, the exhaust pushes downward. Why is this arrangement necessary for a rocket to function properly?

a)

The rocket is protected from the heat of the exhaust

b)

Burned fuel can be collected on the ground

c)

As fuel is combusted, the rocket pushes the gases backward and the gases push the rocket forward

d)

This allows the rocket to be steered properly

17.
The substances listed on the left side of a chemical equation are the
a)
Products
b)
Coefficients
c)
Precipitates
d)
Reactants
18.
How many Hydrogen (H) atoms are in NH3O5
a)
3
b)
4
c)
5
d)
1
19.
How many phosphorus atoms are in PO4?
a)
1
b)
2
c)
3
d)
4
20.
Is the following equation balanced or unbalanced ? 
Al + O2 --> Al2O3
a)
Balanced
b)
Unbalanced
21.
How many hydrogens are in 4H2O?
a)
6
b)
8
c)
2
d)
4
22.
Read the following chemical formula: C6H12O6. How many hydrogen atoms are in the formula?
a)
12
b)
6
c)
4
23.
How many Oxygen atoms are in 4H2O?
a)
4
b)
1
c)
0
d)
8
24.

What is the total number of atoms present in 5Na3PO4?

a)

5

b)

55

c)

40

d)

8

25.

How many Mn atoms are found in the following compound?

2MnO4

a)

1

b)

2

c)

4

d)

8

26.
How many atoms of carbon (C) are in C6H12O6?
a)
3
b)
6
c)
12
d)
24
27.
Pure water has a pH of 7. Pure water _______.
a)
is a base
b)
is a neutral substance
c)
could be either an acid or a base
d)
is an acid
28.

The pH of a solution is tested, and it is found to be a basic solution. Of the following choices, what could the pH have been?

a)

3

b)

7

c)

9

d)

5

29.
Which of the following word pairs correctly completes the sentence below?
_______ are corrosive substances characterized as having a strong smell, a sour taste, and a _______.
a)
Acids; pH less than 7
b)
Acids; pH greater than 7
c)
Bases; pH greater than 7
d)
Bases; pH less than 7
30.
Human blood has a pH between 7.35 and 7.45. Which of the following best describes human blood?
a)
strongly acidic
b)
slightly acidic
c)
strongly basic
d)
slightly basic
31.
What would be considered the weakest base? 
a)
8
b)
14
c)
7.8
d)
11.6
32.
Pollution causes the pH of rain water fall below 6. What is such type of rain called?
a)
Acid rain
b)
polluted rain
c)
low pH rain
33.
Which of the following statements is correct?
a)
Blue litmus paper turns red when placed in a base.
b)
Red litmus paper turns blue when placed in a base.
c)
Blue litmus paper stays blue when placed in an acid.
d)
Red litmus paper stays red when placed in a base.
34.
An extremely strong base would have a pH of:
a)
1
b)
7
c)
-9
d)
14
35.

What PH number would be an example of a strong acid?

a)

14

b)

13

c)

7

d)

1

36.
Acids are what range on the pH scale?
a)
0-14
b)
0-6.99
c)
7
d)
7.1-14
37.
Bases are what range on the pH scale?
a)
0-6.99
b)
7
c)
7.1-14
d)
0-14
38.

What kind of wave is pictured below?

a)

compressional wave

b)

transverse wave

c)

sound wave

d)

mechanical wave

39.
What property of this wave is represented by the letter "A"
a)
amplitude
b)
crest
c)
trough
d)
wavelength
40.
What property of the wave is represented by the letter "B"?
a)
amplitude
b)
crest
c)
trough
d)
wavelength
41.
Which wave in the diagram has the greatest frequency?
a)
1
b)
2
c)
3
d)
4
42.
Which wave in the diagram has the greatest wavelength?
a)
1
b)
2
c)
3
d)
4
43.

Low point of a wave

a)

crest

b)

trough

c)

Amplitude

d)

wavelength

44.

Number of waves passing a given point in a certain amount of time, measured in Hertz (Hz)

a)

wavelength

b)

frequency

c)

amplitude

d)

wave speed

45.

Which color has the lowest frequency?

a)

Red

b)

Pink

c)

Green

d)

Blue

46.
What happens to frequency when the energy increases?
a)
it increases
b)
it decreases
c)
it stays the same
47.
Which wave has a longer wavelength?
a)
wave C
b)
wave D
48.
Which wave has a greater frequency?
a)
wave B
b)
wave C
49.
What is the longest wavelength on the EMS (electromagnetic spectrum)?
a)
Radio Waves
b)
Micro Waves
c)
Gamma Rays
d)
X-Rays
50.

On the EMS, which wave has the shortest wavelength?

a)

Radio

b)

Gamma

c)

Soft X-Rays

d)

Ultraviolet

51.
What is the amplitude?
a)
length
b)
height
c)
# of waves
52.
Which is the wavelength?
a)
1
b)
2
c)
3
d)
4
53.
If the frequency gets higher, the wavelength gets 
a)
longer
b)
shorter
54.
If the wavelength gets longer, the frequency gets 
a)
higher
b)
lower
55.
Which vocabulary term is used to identify the distance between points C & G?
a)
Amplitude
b)
Crest
c)
Frequency
d)
Wavelength
56.

Amplitude is the distance between

a)

the crest and the trough

b)

each wave

c)

the middle point of a wave and the clouds

d)

the crest or trough and the middle point of the wave

57.

which wave has a lower amplitude?

a)

x

b)

y

c)

they are the same

d)

not enough info

58.

Which wave has the highest frequency?

a)

1

b)

2

c)

3

d)

they are all of the same

59.

Which wave has the longest wavelegth?

a)

1

b)

2

c)

3

d)

they are all of the same

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