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Science Y8Y9 Revision _01

Total questions: 100

Worksheet time: 1hrs 21mins

Name
Class
Date
1.

What is scurvy ?

a)

Deficiency of Vitamin B

b)

Deficiency of Protein

c)

Deficiency of Vitamin C

d)

Deficiency of Iron

2.

Which of the below statement are causes of Anemia?

a)

Lack of fibre

b)

Lack of iron

c)

Obesity

d)

coeliac disease

3.

Which of the below statements are Anemia symptoms?

a)

sleep difficulty

b)

loss of energy

c)

Big amount of red blood cells

d)

rapid heart beat

e)

Pale skin

4.
Which mineral is vital for bone and teeth health?
a)
Iron
b)
Calcium
c)

Vitamin C

5.
Which of the following is a carbohydrate?
a)
b)
6.
Which of the following contains lipids?
a)
b)
7.

Deficiency of Vitamin C causes ____________.

a)

Scurvy

b)

Night blindness

c)

Rickets

d)

Anaemia

e)

Goitre

8.

Deficiency of Iron causes

a)

Scurvy

b)

Goitre

c)

Beri-beri

d)

Rickets

e)

Anaemia

9.

Deficiency of Vitamin D causes _________.

a)

Night blindness

b)

Fever

c)

Rickets

d)

Beri-beri

e)

All of these

10.

Goitre is cause by deficiency of

a)

Iodine

b)

Scurvy

c)

Rickets

d)

Calcuim

e)

Night blindness

11.

This chemical Formula in the picture indicates there are

a)

carbon- 1 atom

Oxygen - 2 atoms

b)

carbon - 2 atoms

oxygen - 2 atoms

c)

carbon - 1

oxygen 3

d)

none of the above

12.

Two nitrogen atoms chemically combined is an example of

a)

atoms

b)

mass

c)

compounds

d)

molecules

13.

What is the Chemical Formula

a)

H3OH_3O

b)

H2OH_2O

c)

H0

d)

HH0

14.

A substance made of only one kind of atom.

a)

atom

b)

mass

c)

element

d)

matter

15.

A substance made of two or more elements that are chemically joined in a specific combination

a)

atoms

b)

mass

c)

molecules

d)

compounds

16.

What is the chemical formula for this molecule

a)

O

b)

O2O_2

c)

O3O_3

d)

OO

17.

What is the chemical formula for this compound

a)

SOO

b)

SO

c)

SO2SO_2

d)

SO3SO_3

18.

What is the chemical formula?

a)

NHHH

b)

N1N4N_1N_4

c)

NH3NH_3

d)

N2H3N_2H_3

19.
Which of the following is a compound?
a)
Co
b)
O2
c)
C
d)
CO2
20.

Diffusion is the movement of molecules from an area of _____ concentration to an ______ concentration

a)

High, low

b)

Low, high

c)

Low, low

d)

High, high

21.

What is DIFFUSION?

a)
b)
22.

Which gases move into and out of the blood at the lungs by diffusion

a)

Nitrogen and Oxygen

b)

Oxygen and Carbon Dioxide

c)

Nitrogen and Carbon Dioxide

d)

Argon and Nitrogen

23.
A change in matter that forms one or more new substances with new chemical properties is a/an...
a)
Physical Change
b)
Chemical Change
24.
A characteristic that can be observed or measured without changing the composition of the substance. 
a)
Physical change
b)
Chemical change
c)
Chemical Property
d)
Physical Property
25.
What is the evidence of the chemical change seen here?
a)
Color change
b)
Light produced
c)
state change
d)
mixture
26.
Sugar is dissolved into Kool Aid. What type of change is this? 
a)
Chemical 
b)
Physical 
c)
Multi
d)
Asystematic 
27.

Which type of energy has to do with objects in motion?

a)

Potential

b)

Kinetic

28.

At which point is potential energy greatest?

a)

W

b)

X

c)

Y

d)

Z

29.
A stretched rubberband
a)
potential
b)
kinetic
30.
Jason kicks the soccer ball into the goal
a)
potential
b)
kinetic
31.

Solute is a

a)

Mixture formed when substance dissolves in solvent

b)

Liquid that dissolves substance

c)

Substance that dissolves in liquids

32.

Solvent is a ...

a)

Substance dissolves in liquids

b)

Liquid that dissolves solutes

c)

Mixture formed when solute dissolves in solvent

33.

Solution is a

a)

Mixture formed when solute dissolves in solvent

b)

Liquid that dissolves solute

c)

Substance dissolves in water

34.

Solute that do not dissolves in solvent will form

a)

Solution

b)

Suspension

35.

Solute that dissolves inside solvent will produce

a)

Solution

b)

Suspension

36.

Diagram shows ..

a)

Dilute solution

b)

Concentrated solution

c)

Saturated solution

37.
Yogurt and cheese  can be produced from ___________.
a)
Bacteria
b)
Virus
c)
Protozoa
d)
Algae
38.
Which of the following statements are true?
a)
All microorganisms are bad
b)
All microorganisms are good
c)
Some microorganisms are harmful, while some can be helpful
d)
Microorganisms are too small to do anything to anyone
39.
Bacteria is known as ______________ in an ecosystem when feeding on dead organisms.
a)
decomposers
b)
herbivores
c)
pathogens
d)
infections
40.
Bacteria are made up of how many cells?
a)
1
b)
2
c)
3
d)
trillions!
41.

What is a cell?

a)

Is a smallest part of living thing

b)

Fiber

c)

Nutrients

d)

Wastes

42.

Yeast is a type of ____________ that people use to make bread.

a)

Bacteria

b)

Fungus

c)

Virus

d)

Protist

43.
A tiny, nonliving particle that invades and then reproduces inside a living cell.
a)
Bacteria
b)
Virus
c)
Protist
d)
Fungi
44.
The diagram shows an animal cell. Which structure controls what enters and exits the cell?
a)
1
b)
2
c)
3
d)
4
45.
In which organelle is the DNA of the cell located?
a)
lysosome
b)
mitochondrion
c)
nucleus
d)
vacuole
46.

What is a organism?

a)

a living thing

b)

a non living piece of genetic code that is only able to multiply inside the cells of a living host

c)

a unicellular fungus that can be used to prepare some foods and drinks

d)

something that causes disease, such as a harmful bacteria or virus

47.

Where is the magnetic field the strongest around a bar magnet?

a)

far away from the magnet

b)

at the side of the magnet

c)

at the poles

d)

above the magnet

48.

What is the shape of a magnetic field around the Earth?

a)
b)
c)
d)
49.

What will the magnets in the picture do?

a)

Attract each other

b)

Repel each other

c)

Both attract and repel

d)

Neither attract nor repel

50.

Choose the correct answer.

a)
b)
51.

________ is a reflected sound.

a)

Vibration

b)

Echo

c)

Pitch

d)

Volume

52.
Sound is a form of? 
a)
energy
b)
pitch
c)
volume
53.
What is frequency?
a)
the number of vibrations per second
b)
how high or low a sound is
c)
the loudness or softness of a sound
d)
the back and forth movement of matter
54.

People with the nerve deafness is due to permanent damage to a nerve ending in the ______________

a)

ear canal

b)

eardrum

c)

cochlea

d)

anvil, stirrup, hammer (three bones)

55.

Frequency is measured in the unit of

a)

Ampere (A)

b)

Hertz (Hz)

c)

Mole (mol)

d)

Meter (m)

56.
If a sound has a high amplitude then it also has a ____________!!!
a)
fast echo
b)
slow pitch
c)
high volume
d)
low volume
57.

Fisherman use this to catch fish in the ocean as shown in the diagram. Name it

a)

Sonar

b)

Ultra sound

c)

Ultrasonic

58.

Sound is produce by

a)

Vacuum

b)

Sound wave

c)

Hitting

d)

Vibration

59.

Which of the following is MOST reactive?

a)

Magnesium

b)

Lead

c)

Tin

d)

Copper

e)

Zinc

60.

Which metal is more reactive than calcium?

a)

magnesium

b)

potassium

c)

silver

d)

aluminum

61.

What does displacement mean?

a)

A chemical reaction where a less reactive metal takes the place of a more reactive metal in a compound.

b)

A chemical reaction where a more reactive metal takes the place of a less reactive metal in a compound.

c)

A more reactive metal is removed from a compound.

62.

Magnesium chloride + Sodium → ?

a)

Sodium chloride + Magnesium

b)

Magnesium chloride + Sodium (No change)

c)

Sodium magnesium + Chlorine

63.

Zinc sulphate + Magnesium → ?

a)

Magnesium + Sulphur + Hydrogen

b)

Zinc sulphate + Magnesium

c)

Magnesium sulphate + Zinc

64.

Lithium chloride + Iron → ?

a)

Lithium chloride + Iron (No change)

b)

Iron chloride + Lithium

c)

Lithium oxide + hydrogen

65.

Which can displace Calcium from calcium sulphate?

a)

Sodium

b)

Copper

66.

Complete the following word equation:

Metal + Acid -->

a)

Salt + water

b)

Salt + hydrogen

c)

Salt + Water + Carbon dioxide

67.

Complete the following word equation:

Metalcarbonate + acid -->

a)

Salt + Hydrogen

b)

Salt + Water + Carbon Dioxide

c)

Salt + Water

68.

What is the symbol for Copper?

a)

C

b)

co

c)

Cu

d)

CU

69.

What gas is always produced when carbonates reacts with acids?

a)

Oxygen

b)

Hydrogen

c)

Carbon dioxide

d)

Nitrogen

70.

What gas is always produced when a metal reacts with acid?

a)

Oxygen

b)

Hydrogen

c)

Carbon dioxide

d)

Nitrogen

71.
What is the force that causes everything to be pulled down to the Earth?
a)
friction
b)
gravity
c)
balanced
d)
unbalanced
72.

Which two forces act on an object in water?

a)

gravity

b)

friction

c)

weight

d)

upthrust

73.

What happens if the weight of an object is equal to or less than the upthrust?

a)

It floats

b)

It sinks

c)

It spins

d)

It explodes!

74.

What is the scientific word for 'floating'

a)

levitating

b)

suspended

c)

buoyancy

d)

hovering

75.

What happens if the weight of an object is greater than the upthrust?

a)

it floats

b)

it sinks

c)

it bounces

d)

it vibrates

76.

Which of the following has walls that are one cell thick and is a site for diffusion?

a)

Vein

b)

Artery

c)

Capillary

d)

Aorta

77.

Blood flows from the vena cava into which chamber of the heart?

a)

Left atrium

b)

Right atrium

c)

Left ventricle

d)

Right ventricle

78.

___________ carry blood at high pressure and ___________ carry blood at low pressure.

a)

Arteries; veins

b)

Capillaries; veins

c)

Veins; arteries

d)

Veins; capillaries

79.

Identify the blood vessel labelled A.

a)

Aorta

b)

Pulmonary artery

c)

Pulmonary vein

d)

Vena cava

80.

Identify the blood vessel labelled B.

a)

Aorta

b)

Pulmonary artery

c)

Pulmonary vein

d)

Vena cava

81.

Identify the part labelled C.

a)

Left atrium

b)

Left ventricle

c)

Right atrium

d)

Right ventricle

82.

Which side of the heart has oxygenated blood?

a)

Top

b)

Bottom

c)

Left

d)

Right

83.

In this type of system blood passes through the heart twice in one complete circuit.

a)

Single Circulatory System

b)

Double Circulatory System

c)

Pulmonary System

d)

Double Pulmonary System

84.
The heart has ___ chambers.
a)
1
b)
2
c)
3
d)
4
85.

Type of circulation that refers to the blood flowing through the entire body?

a)

Systemic circulation

b)

Renal circulation

c)

Portal circulation

d)

Pulmonary circulation

86.
The main function of the circulatory system is 
a)
To give the body structure and support
b)
Excrete waste
c)
transport blood, nutrients, and gases throughout the body
d)
to transport messages from the body to the brain
87.
Which is NOT a function of the circulatory system?
a)
deliver O2 and nutrients to cells
b)
remove CO2 and wastes from cells
c)
break down carbohydrates into glucose
d)
transport other materials through body
88.

Fish have which type(s) of circulatory system? (more than 1 answer)

a)

Open

b)

Closed

c)

Single Circuit

d)

Double Circuit

89.
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
90.

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.

91.
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
92.

Gas pressure is caused by

a)

Gas molecules heating up

b)

Gas molecules reacting with other gas molecules

c)

Gas molecules hitting the walls of a container

d)

Gas molecules hitting other gas molecules

93.

The pressure inside the balloon will:

a)

Decrease

b)

Increase

c)

Remain the same

d)

Not enough information to formulate an answer

94.

The pressure inside the tyre is higher on a hot day as air particles inside the tyre move ​ (a)   at higher temperature, collisions with the inside surface have ​ (b)   force and occur ​ (c)   frequently.

Choose from the below words
faster
more
slower
less
95.

compound ---> element + element

a)

synthesis

b)

decomposition

c)

combustion

d)

single replacement

96.
What type a reaction is taking place in this picture?
a)
Synthesis
b)
Decomposition
c)
Single Replacement
d)
Double Replacement
97.
In an endothermic reaction, heat is ...
a)
taken in or absorbed
b)
given out or released 
98.

In an exothermic reaction, heat is ...

a)

taken in or absorbed

b)

given out or released

99.

When barium hydroxide and ammonium chloride react, the temperature of the mixture decreases. What kind of reaction is this?

a)

Endothermic

b)

Decomposition

c)

Exothermic

d)

Indothermic

100.

The graph shows the relationship between force and extension as a spring is extended. What is another name for point A?

a)

Point A is the elastic limit

b)

Point A is the elastic summet

c)

Point A is the plastic limit

d)

Point A is the extension limit

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