wayground logo

Free Printable Worksheets

Font size

S
M
L
XL
Worksheets

Term 3 Exam Revision Quiz (Unit 1-3)

Total questions: 200

Worksheet time: 5hrs 37mins

Name
Class
Date
1.

NUMBER 6 is

a)

Lungs

b)

Trachea

c)

Mouth

d)

Alveoli

2.

NUMBER 3 is

a)

Pharynx

b)

Trachea

c)

Bronchi

d)

Alveoli

3.

Which are the main organs in the respiratory system?

a)

Heart

b)

Stomach

c)

Lungs

d)

Nose

4.

What is the function of the respiratory system?

a)

Take in oxygen only

b)

Remove carbon dioxide only

c)

Take in oxygen and remove carbon dioxide

d)

Make sugar

5.

What is the tube called that is also known as your wind pipe?

a)

Oesophagus

b)

Bronchi

c)

Trachea

d)

Alveoli

6.

Which of these organs is not a part of the respiratory system?

a)

Trachea

b)

Lungs

c)

Heart

d)

Pharynx

7.

The muscles that helps to expand and contract the lungs, forcing air in and out

a)

Pharynx

b)

Nasal cavity

c)

Alveoli

d)

Diaphragm

8.

Diagram shows a model of human respiratory system. K represents....

a)

lung

b)

rib cage

c)

diaphragm

d)

thoracic cavity

9.

Exchange of gases in the body cells occurs in the bronchioles.

a)

TRUE

b)

FALSE

10.

During inhalation....

a)

intercostal muscles contract

b)

air pressure in the thoracic cavity to decrease

c)

rib cage moves downwards and inwards

d)

diaphragm muscles relax and curve upwards

e)

diaphragm muscles contract

11.

During exhalation....

a)

intercostal muscles contract

b)

air pressure in the thoracic cavity to decrease

c)

rib cage moves downwards and inwards

d)

diaphragm muscles relax and curve upwards

e)

intercostal muscles relax

12.

"Movements of the rib cage and diaphragm make the thoracic cavity smaller and cause the air pressure in the thoracic cavity to increase"


The situation happens during....

a)

inhalation

b)

exhalation

c)

excretion

d)

blood circulation

13.
Clusters of tiny air sacs that allow the exchange of oxygen and carbon dioxide
a)
Pharynx
b)
Diaphragm
c)
Alveoli
d)
Lungs
14.
The actual gas exchange with the blood occurs in the 
a)
bronchi
b)
bronchioles
c)
alveoli
d)
ventricles
15.
The movement of oxygen from the alveoli to the blood and from the blood to the tissues is due to the process of... 
a)
osmosis
b)
diffusion
c)
cytokinesis
d)
phagocytosis
16.
The use of oxygen by the cells to release enery from food is called...
a)
photosynthesis
b)
cellular respiration
c)
diffusion
d)
osmosis
17.
Dissolved particles move across a membrane from a higher concentration to a lower concentration. 
a)
True
b)
False
18.

Which of the following are features of the alveoli that adapt them to gas exchange?

I. High surface area

II. Thin walls

III. Dry surfaces

a)

I and II only

b)

I only

c)

II and III

d)

I, II, and III

19.

Given the following structures:

1. alveoli

2. bronchi

3. bronchioles

Which of the following is the correct order in which air would flow after inhalation?

a)

1,2,3

b)

2,1,3

c)

2,3,1

d)

3,2,1

20.

what is found around alveoli?

a)

capillaries

b)

pleura

c)

lymphatic nodes

d)

saliva

21.

What adaptations does the alveoli have for efficient gas exchange?

a)

thick walls

b)

thin walls

c)

small surface area

22.

Gas exchange is needed to supply _____________ to cells and remove __________________

a)

carbon dioxide; oxygen

b)

oxygen; food

c)

oxygen; carbon dioxide

d)

carbon dioxide; water

23.
Mechanical movement to inhale and exhale air
a)
Gas Exchange
b)
Respiration
c)
Breathing
d)
Transport
24.
Respiration is the 
a)
Intake of oxygen and release of carbon dioxide over a membrane
b)
Release of energy from food inside cells
c)
Mechanical movement to inhale and exhale air
d)
Feature that enable an animal to survive in its habitat
25.

Which two muscles are responsible for BREATHING?

a)

The Diaphragm

b)

The Lungs

c)

The Heart

d)

The Intercostal Muscles

26.

The Lungs are made of muscles.

a)

True

b)

False

27.

During Expiration (breathing out) the intercostal muscles _____________________ and the chest becomes smaller.

a)

contract

b)

relax

28.

Another word for breathing in is:

a)

Indulgating

b)

Inspiration

c)

Expiration

29.

Respiration is a vital function that all living things carry out.

a)

True

b)

False

30.

Respiration takes place in

a)

the cells

b)

the lungs

c)

the heart

d)

the brain

31.

Is respiration the same as breathing?

a)

Yes

b)

No

32.

Respiration is a chemical reaction.

a)

True

b)

False

33.

For respiration to take place glucose needs to react with substance A. Select substance A.

a)

Carbon dioxide

b)

Water

c)

Oxygen

d)

Ozone

34.

When respiration takes place, energy is produced along with another two substances B and C. Select substances B and C.

a)

Carbon dioxide

b)

Water

c)

Oxygen

d)

Ozone

35.

The glucose used during respiration is provided by our

a)

digestive system

b)

respiratory system

c)

circulatory system

36.

The oxygen used during respiration is provided by our

a)

digestive system

b)

respiratory system

c)

circulatory system

37.

The glucose and oxygen used during respiration is delivered to each and every cell by the

a)

digestive system

b)

respiratory system

c)

circulatory system

38.

While exercising our body needs to produce

a)

more energy

b)

less energy

39.

During exercise our body needs to produce more energy by respiration thus it needs

a)

less oxygen

b)

more oxygen

40.

During exercise our body needs to produce more energy by respiration thus it needs more oxygen. Our breathing rate

a)

increases

b)

decreases

41.

Do plant cells carry out respiration

a)

Yes

b)

No

42.
What process is the opposite of aerobic respiration?
a)
anaerobic respiration
b)
cellular respiration
c)
photosynthesis
d)
lactic acid fermentation
43.
Glucose is a form of ______ Energy. 
a)
Radiant
b)
Chemical
44.

Which of the following structure is where cellular respiration occurs in the cell?

a)

nucleus

b)

cytoplasm

c)

mitochondria

d)

vacuoles

45.

What carries oxygen around the body?

a)

Plasma

b)

Red Blood Cells

c)

Platelets

d)

White Blood Cells

46.

What causes the blood to be the distinct red colour?

a)

Haemoglobin

b)

Glucose

c)

Hormones

d)

Oxygen

47.

Which of the following is NOT a type of blood vessel?

a)

Artery

b)

Capillary

c)

Vein

d)

Ventricle

48.

What is the function (job) of the platelets?

a)

To form clots (i.e. scabs) when you have cuts and grazes.

b)

To transport oxygen to the muscles

c)

To carry dissolved sugars.

d)

To produce antibodies

49.

What is the function (job) of the white blood cells?

a)

To transport oxygen around the body.

b)

To carry dissolved sugars.

c)

To clot and cover wounds like cuts and grazes.

d)

To release antibodies to help destroy infections.

50.

What is the function (job) of the plasma?

a)

To release antibodies to fight infections.

b)

To transport oxygen around the body.

c)

To carry dissolved nutrients and sugars.

d)

To transport oxygen around the body.

51.

What is the function (job) of the red blood cells?

a)

To transport oxygen around the body and to the muscles.

b)

To release antibodies to fight infections.

c)

To carry dissolved nutrients and sugars.

d)

To clot and form scabs if there is a wound on the body.

52.

Which blood vessels take blood TO the heart?

a)

Veins

b)

Arteries

c)

Capillaries

53.

Which blood vessels take blood AWAY from the heart?

a)

Veins

b)

Arteries

c)

Capillaries

54.

Which is the smallest of the 3 blood vessels?

a)

Veins

b)

Arteries

c)

Capillaries

55.

What type of blood do the arteries usually carry?

a)

Oxygenated Blood

b)

Deoxygenated Blood

56.

Which blood vessel has valves to prevent the back-flow of blood?

a)

Veins

b)

Arteries

c)

Capillaries

57.

What is blood made of?

a)

oxygen and plasma

b)

red blood cells and white blood cells

c)

plasma, red blood cells, white blood cells, and platelets.

d)

plasma and platelets

58.

What is plasma?

a)

only white blood cells

b)

only red blood cells

c)

fluid part of blood

d)

hemoglobin

59.
What organ pumps blood throughout the body?
a)
eyes
b)
skin
c)
liver
d)
heart
60.

A condition that develops when your blood lacks enough healthy red blood cells or hemoglobin

a)

Lymphatic System

b)

Not Anemia

c)

Platelets

d)

Anemia

61.

Fight bacteria and viruses by entering infected tissue, destroying bacteria/viruses and absorb dead blood cells

a)

White Blood Cells

b)

Red Blood Cells

c)

Platelets

d)

Plasma

62.

Platelets are cells.

a)

True

b)

False

63.

Red blood cells have a nucleus.

a)

True

b)

False

64.

Why do platelets clump together?

a)

to produce oxygen

b)

to reduce oxygen

c)

to produce blood loss

d)

to reduce blood loss

65.

What are pathogens?

a)

disease-causing bacteria, viruses, and other microorganisms

b)

large platelets

c)

antibodies

d)

tiny fibers

66.

What destroys pathogens?

a)

antibodies

b)

red blood cells

c)

platelets

d)

plasma

67.

The force of blood pushing on walls of arteries.

a)

antigens

b)

blood type

c)

blood pressure

d)

dark matter

68.

solute + solvent =

a)

solution

b)

equation

69.

Solutes dissolve quicker in _________ water.

a)

cold

b)

warm

70.

Solutes dissolve quicker if you stir them.

a)

true

b)

false

71.
The substance being dissolved in a solution.
a)
sands
b)
solute
c)
solvent
d)
alloy
72.
The substance in which a solute is dissolved
a)
sands
b)
solvent
c)
alloy
d)
negative particles
73.
Solubility is defined as
a)
the ability to catch on fire
b)
the ability to be dissolved
c)
the ability to fly.
d)
the ability to get on Mrs. D's nerves.
74.

Fish breathe oxygen, which is dissolved in water. Is the oxygen the fish breathe considered to be the solute or solvent?

a)

Solute

b)

Solvent

75.

You make a pitcher of lemonade by adding lemon juice, sugar, ice and water. Which of the following are the solutes in the solution?

a)

Lemon juice

b)

Sugar

c)

Water

d)

Ice

76.
What is the following method called?
a)
Distillation
b)
Filtration
c)
Decanting
d)
Evaporating
77.
When temperature increases, molecules
a)
slow down
b)
speed up
c)
contract
d)
stay the same
78.
A compound is
a)
a force that allows elements to share, lose or gain electrons.
b)
the smallest part of a molecule.
c)
a substance that results when two or more elements join together.
d)
when two or more atoms join together.
79.
Which is not an example of dissolving?
a)
Salt in water
b)
Sugar in water
c)
Water in water
d)
HCl in water
80.

Which would NOT increase the rate at which a sugar cube dissolves?

a)

Reducing the amount of solvent

b)

Crushing the sugar cube

c)

Stirring the solution

d)

Heating the solvent

81.

You can make a solute dissolve more quickly in a solvent by

a)

adding more solute.

b)

adding ice.

c)

heating the solvent.

d)

removing some solvent.

82.

A solution that contains all of the solute it can hold at a given temperature is

a)

diluted.

b)

saturated.

c)

supersaturated.

d)

unsaturated.

83.

The amount of solute that can be dissolved in a specific amount of solvent at a given temperature is its

a)

concentration.

b)

density.

c)

dilution.

d)

solubility.

84.

Three 10 g samples of sugar are represented below.


Sample A dissolves in water more slowly than sample B.

Sample B dissolves more slowly than sample C.

Which of the following best explains why sample A dissolves more slowly than the other two?

a)

It has the most volume.

b)

It has the smallest surface area.

c)

It has the largest number of sugar molecules.

d)

It has the fewest bonds between sugar modules.

85.

A student pours mineral salts into a bottle of cold water. Which of the following best explains why shaking the bottle will affect the dissolving rate of the salt?

a)

Shaking exposes the salts to the solvent more quickly.

b)

Shaking helps more water evaporate.

c)

Shaking equalizes the water temperature.

d)

Shaking causes more ions to precipitate out of solution.

86.

Students in Ms. Alvarez’s science class are investigating how temperature, in degrees Celsius (C), affects the solubility of a compound in 100 milliliters (mL) of water. Ms. Alvarez provides the students with a graph that shows the solubility of a certain compound, as shown below.


She then tell the students that she will demonstrate how many grams (g) of the compound will dissolve in 100 mL of water at 40 C. Based on the information in the graph, which of the following is the best prediction of how many grams of the compound will dissolve at 40 C?

a)

40 g

b)

65 g

c)

85 g

d)

100 g

87.

A solution is defined as

a)

A mixture of oil and water

b)

A mixture where a substance is dissolved

c)

A mixture that contains two solids

d)

None of the above

88.

Select all the factors which can affect the solubility of a substance

a)

temperature

b)

size of solute or the surface area of the solute

c)

the amount of stirring

d)

colour of the solute

89.

Which method below is used to get back the salt from a solution of salt and water?

a)

Condensation

b)

Photosynthesis

c)

Freezing

d)

Evaporation

90.

Choose the correct methods if you want to prepare a cup of coffee in a short time.

a)

Use cold water

b)

Use hot water

c)

Use crystal cube sugar

d)

Stirring the drink faster

e)

Use powdered sugar

91.

Ink can be separated by a method of -----------------------------------------------

a)

distillation

b)

filtration

c)

chromatography

d)

sedimentation

92.
chromatography separates the mixture of dyes on the basis of their ----------------------------
a)
density
b)
solubility
c)
gravity
d)
boiling point
93.
On the chromatogram given -------------- is mixture.
a)
red
b)
orange
c)
green
d)
black
94.

A pure substance shows ------------------ spot on chromatogram

a)

0

b)

1

c)

2

d)

3

95.

A substance is soluble if it can be dissolved.


In paper chromatography, the most soluble solute _____________________ .

a)

does not move from the start point

b)

stays closest to the start point

c)

travels furthest away from the start point

d)

can be found in the middle of the chromatogram

96.

Two or more substances that are mixed together but not chemically combined create a...

a)

solvent

b)

compound

c)

mixture

97.

Which of the following mixture/s is/are separated by chromatography?

a)

Pigments from natural colours

b)

Colours in a dye

c)

Colours of flowers extracts

d)

All the above

98.

Which of the following is correct about chromatography?

a)

It separates those solutes that dissolve in the same solvent.

b)

It separates those solutes that dissolve in different solvents.

c)

It separates a solute that dissolves in a solid solvent.

d)

It separates gaseous solutes from liquid solvents.

99.
Why must the base line be drawn in pencil and not pen?
a)
a) Pencil is good at keeping substances in place.
b)
b) Pencil is soluble in water
c)
c) Pencil is insoluble in water
d)
d) Pencil is not coloured
100.
Why is Chromatography useful?
a)
It can be used as medicine.
b)
It can be used for finding clues at a crime scene
c)
It can be used to make bombs.
d)
It can reduce the lack of food and water.
101.

If a substance is not soluble in the solvent, what happens to the spot placed on the start line?

a)

a) Dot moves to the top of the paper

b)

b) Dot does not move at all

c)

c) Dot moves to the left or right

d)

d) Dot moves down to the bottom of the paper

102.

In paper chromatography, the LEAST soluble solute ____.

a)

does not move from the start point

b)

stays closest to the start point

c)

travels furthest away from the start point

d)

can be found in the middle of the chromatogram

103.
In chromatography, if a solute does not separate and remains on the start line ....
a)
the solute is insoluble in the solvent
b)
the solute is soluble in the solvent
c)
the solvent is insoluble in the solute
d)
the solvent is soluble in the solute
104.
Whose blood was found at the crime scene?
a)
John
b)
Lisa
c)
Bob
d)
Sure
105.

If an unbalanced force acts on an object at rest, the object will move in the direction of the force. Which of the following best models an object with unbalanced forces acting on it?

a)
b)
c)
d)
106.

A student wished to design an investigation to determine the effect of changing the mass of an object when an unbalanced force is applied the object.

What should she use as the independent variable in her investigation?

a)

Time

b)

Force

c)

Mass

d)

Speed

107.
A push or pull is referred to as a: 
a)
vector
b)
force
c)
air resistance
108.
When the net force is zero what type of force is acting on the objects? 
a)
balanced force
b)
unbalanced force
109.
When the resulting force is greater than zero what type of force is acting on the objects? 
a)
balanced force
b)
unbalanced force
110.
What type of force is being illustrated?
a)
balanced force
b)
unbalanced force
111.
What type of force is being illustrated?
a)
balanced force
b)
unbalanced force
112.

What causes a change in an object's motion?

a)

Balanced forces

b)

Acceleration

c)

Unbalanced forces

113.
How long would it take a bus traveling at 50 km/h to travel 125 km?
a)
6,250 hours
b)
2.5 km
c)
2.5 hours
d)
6,250 km
114.
A bus carrying Ava's friends to a soccer game traveled 10 km in 30 minutes. What was the average speed of the bus in km/hr?
a)
300 km/hr
b)
.33 km/hr
c)
20 km/hr
115.
If, on a hike, Nathaniel traveled 2,800 m in 2 hours, what was his average speed in m/hr?
a)
5,600 m/hr
b)
140 m/hr
c)
56 m/hr
d)
1,400 m/hr
116.
Avery swims 1000 m in 30 minutes.  What is her average speed?
a)
33.33 m/min
b)
300 m/min
c)
30 m/min
d)
3 m/min
117.
Grace drove her mom's car for 70 km and it took her 120 minutes.  What was her average speed in km/hr?
a)
.58 km/min
b)
35 km/hr
c)
8400 km/min
d)
3.5 km/hr
118.

A runner races in the 100 meter dash. It takes her 10 seconds to finish. What is her average speed?

a)

10 m/s

b)

1000 m/s

c)

100 seconds

d)

10 seconds

119.
Dave runs a 400 m race with a speed of 4 m/s. What time will it take him to finish the race?
a)
400 minutes
b)
100 minutes
c)
100 seconds 
d)
.25 seconds 
120.
Which of the following is a unit of speed ?
a)
sec
b)
mi
c)
m/s
d)
min
121.
Which of the following is a unit of speed?
a)
km/hr
b)
hr
c)
km
d)
s
122.
A different runner trains for a marathon for 6 months by eating nothing but bags of french fries from McDonalds. They run a 10 meter dash in 100 seconds. What is their speed?
a)
0.01 m/s
b)
0.1 m/s
c)
1 m/s
d)
10 m/s
123.

Describe the motion in the graph:

a)

Constant Speed (positive slope)

b)

Stopped (at rest)

c)

Acceleration (increasing speed)

d)

Return Home (negative slope)

124.

Describe the motion in the graph:

a)

Constant Speed (positive slope)

b)

Stopped (at rest)

c)

Acceleration (increasing speed)

d)

Return Home (negative slope)

125.

Describe the motion in the graph:

a)

Constant Speed (positive slope)

b)

Stopped (at rest)

c)

Acceleration (increasing speed)

d)

Return Home (negative slope)

126.

Describe the motion in the graph:

a)

Constant Speed (positive slope)

b)

Stopped (at rest)

c)

Acceleration (increasing speed)

d)

Return Home (negative slope)

127.

Describe the motion in the graph:

a)

Constant Speed (positive slope)

b)

Stopped (at rest)

c)

Acceleration (increasing speed)

d)

Return Home (negative slope)

128.

Describe the motion in the graph:

a)

Constant Speed (positive slope)

b)

Stopped (at rest)

c)

Acceleration (increasing speed)

d)

Return Home (negative slope)

129.
What does this graph represent?
a)
Constant Speed
b)
Acceleration
c)
Not moving
130.
How long did it take this object to travel back to its reference/starting point?
a)
20 s
b)
30 s
c)
60 s
d)
100 s
131.
At 60 seconds, how far had this object traveled? 
a)
0 m
b)
10 m
c)
20 m
d)
40 m
132.
What does this graph represent?
a)
Constant speed
b)
Acceleration
c)
Not moving
133.
What is happening at D?
a)
Stationary
b)
Accelerating
c)
Fast steady speed; moving away from the starting position
d)
Slower steady speed; moving away from the starting position
134.
What is happening at C?
a)
Stationary
b)
Accelerating
c)
Fast steady speed; moving away from the starting position
d)
Slower steady speed; moving away from the starting position
135.
What does this graph represent?
a)
Constant speed
b)
Acceleration
c)
Not moving
136.
How long did it take this object to travel 10 m?
a)
0 s
b)
10 s
c)
15 s
d)
20 s
137.
Which runner had a head start?
a)
A
b)
B
c)
C
138.
What two measurements are necessary for calculating speed?
a)
Mass and time
b)
Temperature and mass
c)
Mass and distance
d)
Distance and time
139.
A measurement of how fast an object is moving
a)
Velocity
b)
Speed
c)
Vector
d)
Acceleration
140.
Can be measured in meters (m)
a)
Distance
b)
Time
c)
Speed
d)
Acceleration
141.

In which of the following graphs below are both runners moving at the same speed?

a)
b)
c)
d)
142.

Match the description to the graph:

"The car is coming back."

a)
b)
c)
d)
143.

Match the description to the graph:

"The car is traveling at a constant speed."

a)
b)
c)
d)
144.

Segment B-C The bus is _________________.

a)

at rest

b)

returning (to original position)

c)

moving forward

145.
What is the equation to calculate time?
a)
time = speed/distance
b)
time = distance/speed 
c)
time = speed x distance 
d)
time = distance x speed
146.
1. A _________is a simple machine with a fulcrum and a rigid bar.
a)
Pivot
b)
Lever
c)
Wedge
147.
What is the anticlockwise moment acting on this crane?
a)
80,000Nm
b)
100,000Nm
c)
120,000Nm
d)
140,000Nm
148.
Unit of force.
a)
Meter
b)
Centimeter
c)
Newton
149.
What is the moment acting on the seesaw?
a)
1.6Nm
b)
15Nm
c)
16N
d)
4Nm
150.
What is the moment produced by the 15 N?
a)
15 Nm (clockwise)
b)
150 Nm (anti - clockwise)
c)
1.5 Nm (anti - clockwise)
d)
0.15 Nm (clockwise)
151.
A seesaw is unbalanced with two people of different masses sitting equal distances from the center. Which of the following will result in equilibrium?
a)
The larger person moving further away from the center.
b)
Moving the smaller person closer to the center.
c)
Moving the smaller person further from the center.
d)
Making the larger person do nothing.
152.
The easiest way to open a heavy door  is by applying the force
a)
Near the hinges
b)
In the middle of the door
c)
At the edge of the door far from the hinges
d)
At the top of the door
153.

Two masses of mass 10.0 and 6.0 kg are hung from massless strings at the end of a light rod. The rod is virtually weightless. A pivot (fulcrum) is placed off center and the system is free to rotate. If the 6.0 kg mass is 4.0 m away from the pivot, how far away is the 10.0 kg mass if the system is not rotating?

a)

0.42 m

b)

2.4 m

c)

4.8 m

d)

4.2 m

154.
A wrench is used to tighten a nut. A 15N perpendicular force is applied 50cm away from the axis of rotation, and moves a distance of 10 cm as it turns. What is the torque applied to the wrench?
a)
7.5 Nm
b)
1.5 Nm
c)
750 Nm
d)
150 Nm
155.

Assuming the system is in equilibrium, calculate the missing distance d

a)

3.4 m

b)

2.8 m

c)

4.4 m

d)

1.6 m

156.

A nut can be loosened more easily with

a)

a short spanner because a larger turning effect can be produced.

b)

a long spanner because a larger turning effect can be produced.

c)

a long spanner because a larger force can be produced.

d)

a short spanner because a larger force can be produced.

157.

A boy of weight 600N sits on the see-saw as shown at a distance of 1.5m from the pivot. What is the force F required at the other end to balance the see-saw?

a)

450 N

b)

350 N

c)

4.5 N

d)

200 N

158.

Moment (Nm) =

a)

Force (N) x distance (m)

b)

Angular Force (N°) x distance (m)

c)

Work done (J)

d)

Force (N) x distance (s)

159.

What are the units for Moment?

a)

N

b)

kgm/s

c)

kN

d)

Nm

160.

State the principle of moments.

a)

When a system is in equilibrium, the sum of the total clockwise moment is equal to the sum of the total anti-clockwise moment about the same pivot.

b)

When a system is in equilibrium, the sum of the total clockwise moment is greater the sum of the total anti-clockwise moment about the same pivot.

c)

When a system is in equilibrium, the sum of the total clockwise moment is less than the sum of the total anti-clockwise moment about the same pivot.

d)

When a system is in equilibrium, the sum of the total clockwise moment is equal to the sum of the total anti-clockwise moment about the different pivot.

161.

What is the size of the moment shown by the black arrow?

a)

30 Nm

b)

36 Nm

c)

40 Nm

d)

60 Nm

162.
Equilibrium means _________
a)
being at rest
b)
traveling at light speed
c)
balance
d)
pushing or pulling
163.

Two equal and oppositely directed forces acting on an object will be in equilibrium

a)

Only if they act on the same point on the object

b)

If they are separated by a distance

c)

When they are balanced by a third force

d)

when their moments about the same point are equal

164.

At what distance should a 2N load placed from the pivot so that the see saw won't move?

a)

0.2m

b)

0.5m

c)

0.45m

d)

0.42m

165.
The amount of force pushing on an area is the definition of....
a)
Fluid
b)
Viscosity
c)
Barometer
d)
Pressure
166.
If the horse reared up on 2 legs what effect would it have on the pressure?
a)
it will exert half the pressure it did before
b)
it will exert the same pressure it did before
c)
it will exert twice the pressure it did before
d)
it will exert four times the pressure it did before
167.

Army tank tracks are useful for travelling through the mud because..

a)

they decrease the force the vehicle exerts on the ground

b)

they increase the force the vehicle exerts on the ground

c)

they decrease the pressure the vehicle exerts on the ground

d)

they increase the pressure the vehicle exerts on the ground

168.
Which of these animals would probably cause the greatest pressure on the ground?
a)
A fat cow with big feet
b)
A fat cow with small feet
c)
 A calf with big feet
d)
A calf with small feet
169.
What is the equation used to calculate pressure?
a)
pressure= force/mass
b)
pressure =mass/volume
c)
pressure=area/force
d)
pressure=force/area
170.
What is the unit of measurement for pressure?
a)
pascal
b)
grams
c)
milliters
d)
meters
171.
Pressure decreases when the surface area over which a force is applied increases
a)
True
b)
False
172.
Where is pressure the greatest on the dam?
a)
D
b)
C
c)
B
d)
A
173.

In the image which hole will allow the water to travel furthest?

a)

A

b)

B

c)

C

174.
What pressure does a 4000N horse exert on the ground if each foot is 10cm2?
a)
40 N/cm2
b)
100 N/cm2
c)
400 N/cm2
d)
10 N/cm2
175.

What is the term for the weight of air molecules pushing down on Earth?

a)

gravity

b)

wind

c)

air pressure

d)

oxygen

176.
What is the difference between particles in a gas and a solid?
a)
gas particles are closer together
b)
solid particles move faster than gas particles
c)
solid particles expand on heating
d)
gas particles have more kinetic energy than solid particles
177.
How can we increase the gas pressure inside a sealed container?
a)
Increase the number of particles inside the container
b)
Increase the temperature
c)
Decrease the volume of the container
d)
All of these
178.

If a hairspray can is heated, what can be expected of the pressure of the gas inside the can?

a)

The pressure will increase

b)

The pressure will decrease

c)

The pressure will remain constant

d)

The pressure will equalize

179.
In what direction(s) does air exert pressure?
a)
everywhere
b)
no where
c)
there is no pressure
d)
downward
180.

The pressure inside the syringe will decrease if we move the plunger in:

a)

Direction A

b)

Direction B

c)

We don't have to move the plunger as the pressure will change on its own.

d)

None of the above answers.

181.

The reason gases can be compressed is because:

a)

The particles are very close together.

b)

The particles are merely vibrating.

c)

The particles are unable to move.

d)

The particles are very far apart.

182.

In which one the ballon will burst for sure

a)

With a small force on a nail

b)

on many nails with a small force

c)

On many nails with a big force

d)

On a single nail with a big force

183.

Check true one about pressure

a)

If you doubled the area you doubled pressure

b)

Pressure will be halved if you halved the arae

c)

Pressure is tripled if you doubled the force

d)

Pressure is doubled if you halved the area

184.

check all true information about the figures

a)

same pressure acts to the bottom

b)

The middle one has the least pressure at the base

c)

Since they have same density and same height they have the same pressure

d)

Pressure is independent of the shape of the container

185.
What happens to pressure as you go deeper under water?
a)
it increases
b)
it decreases
c)
it stays the some
d)
no soup for you!
186.
Arrange the density of spheres, W, X, Y and Z, in descending order.
a)
X, Y, W, Z
b)
Y, X, W, Z
c)
X, W, Y, Z
d)
W, Z, X, Y
187.
Where would you find the largest pressure?
a)
At the bottom of the ocean
b)
At the top of Mt Everest
c)
Close to ground on the Scotch oval
d)
In a rockpool on the Great Barrier Reef
188.
Objects A-D are in water. Which is the most dense?
a)
A
b)
B
c)
C
d)
D
189.

How do you Calculate Pressure

a)

Force(N)/Area(m2)

b)

Force(kg)/Area(mi2)

c)

Area(m2)/Force(N)

190.

Diffusion occurs only in solids

a)

True

b)

False

191.

How do the particles move in diffusion?

a)

From a region of low concentration to a region of high concentration

b)

From a region of high concentration to a region of low concentration

c)

From a region of low concentration to a region of low concentration

d)

From a region of high concentration to a region of high concentration

192.

How long does diffusion last?

a)

Until the concentration of particles in the system is equal

b)

(Select this answer and I swear i'll make it harder for you in the assessment task)

c)

Until a region in the system has a greater concentration of particles than the other

d)

Until the particles disappear from the system

193.

The movement of particles is __________, resulting in the particles being spread throughout the container

a)

Structured

b)

In a straight line

c)

Random

d)

In curved, way motions

194.

What happens to the coffee particles when coffee is added to hot water?

a)

They sink to the bottom of the cup

b)

They spread out

c)

They clump together

195.

What does a 'region with high concentration' mean?

a)

An area with a SMALL number of particles

b)

An area with a LARGE number of particles

c)

An area with an UNEVEN number of particles

d)

An area with no particles

196.

When does diffusion stop?

a)

After a day and a night

b)

When the particles are evenly spread out

c)

When there are no particles left

d)

When all the particles leave the system

197.
Diffusion is the _______________ movement of particles freely in all directions to occupy the whole space available
a)
constant orderly
b)
constant random
c)
continuous
d)
fixed
198.
An increase in temperature does what to diffusion?
a)
Speeds it up
b)
Slows it down
c)
Has no effect
d)
I wish i knew. Really I do.
199.
The faster an object moves, the ________ kinetic energy it has. 
a)
more
b)
less
c)
none of the above
d)
all of the above 
200.
What happens to particles when they are heated?
a)
They speed up and spread out
b)
They slow down and compress
c)
They stop moving
d)
They move closer together and speed up

Similar Resources on Wayground

G8 Integrated Science: Year in Review Quiz - Homeo and Forces

205 questions

G8 Integrated Science: Year in Review Quiz - Homeo and Forces

quiz

Worksheet

•

8th Grade

PS Midterm Review

200 questions

PS Midterm Review

quiz

Worksheet

•

8th - 10th Grade