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SCIENCE REVISION

Total questions: 167

Worksheet time: 42hrs 45mins

Name
Class
Date
1.
Physical changes can be brought about by
a)
Cutting
b)
Bending
c)
Dissolving
d)
All of the following are correct.
2.
a)
Physical Change
b)
Chemical Change
3.
a)
Physical Change
b)
Chemical Change
4.
a)
Physical Change
b)
Chemical Change
5.
a)
Physical Change
b)
Chemical Change
6.
a)
Physical Change
b)
Chemical Change
7.
a)
Physical Change
b)
Chemical Change
8.

How many chambers does the heart consist of?

a)

2

b)

3

c)

4

d)

6

9.

What do the lungs provide the blood with?

a)

oxygen

b)

blood

c)

hydrogen

d)

carbon dioxide

10.

What is biggest artery in a human body?

a)

arteries

b)

veins

c)

capillaries

d)

an aorta

11.
Xylem and phloem are examples of _ tissue
a)
Spores
b)
Nonvascular
c)
Seeds
d)
Vascular
12.

How does water enter a plant?

a)

through the stomata

b)

through the roots

c)

by active transport in root hair cells

d)

by osmosis in root hair cells

13.

Phloem tubes transport substances in which direction?

a)

Up

b)

Up and down

14.

Where does water enter the plant?

a)

The stem

b)

The roots

c)

The leaves

d)

The flower

15.

What does the Xylem transport?

a)

Water and Minerals

b)

Glucose

c)

Blood

d)

Chlorophyll

16.
How many parents does asexual reproduction involve?
a)
one 
b)
two
c)
three
d)
four
17.
A converging lens is also known as a ____ lens.
a)
convex
b)
concave
c)
double
d)
refracted
18.
A diverging lens is also known as a ____lens.
a)
refracted
b)
diffracted
c)
convex
d)
concave
19.
___ is when light travels through a material and bends.
a)
Diffraction
b)
Dispersion
c)
Mirage
d)
Refraction
20.
What type of lens do humans have in their eyes? 
a)
Concave Lens 
b)
Convex Lens 
21.

A flat mirror is an example of a ___.

a)

plane mirror

b)

concave mirror

c)

convex mirror

d)

spherical mirror

22.

Type of mirror used as a side mirror on a vehicle to provide a wide angle view...

a)

Plane

b)

Convex

c)

Concave

23.

Type of mirror that can produce an inverted image...

a)

Plane

b)

Convex

c)

Concave

24.

A substance that is formed as the result of a chemical reaction is a __________________

a)

Product

b)

Reactant

c)

Starters

d)

Enders

25.
Which of the following is an example of a chemical change?
a)
rusting of a bicycle
b)
painting a house
c)
washing a dog
d)
tearing up a newspaper
26.

What is weather?

a)

The amount of moisture in the air

b)

The number of clouds in the sky

c)

The speed of the wind

d)

The state of the atmosphere at any particular time.

27.

Which of the following devices measures air pressure?

a)
b)
c)
d)
28.
_____________ air is more dense and tends to sink
a)
cold
b)
warm
c)
moist
d)
dry
29.

What is climate?

a)

weather

b)

rain, sleet, snow, or hail

c)

average weather in a region over a long period of time

d)

the amount of ice cream available in a city

30.

Penguins have similar adaptations as

a)

Seals

b)

Polar bears

c)

Birds

31.

What is stored in a camel's hump?

a)

Food

b)

Water

c)

Fat

32.

The red-eyed tree frog has ____ that help it to climb trees.

a)

Sticky tongue

b)

Sticky pads on its feet

c)

Sticky pads on its belly

33.

Which of these is not a fibre?

a)

cotton

b)

wool

c)

nylon

d)

leather

34.

Which part of sheep's body yield fibres?

a)

Leg

b)

Eye

c)

Mouth

d)

Hair

e)

Liver

35.

The rearing of silkworms for obtaining silk is called---------

a)

Agriculture

b)

Sericulture

c)

Aquaculture

d)

poultry

36.

Which of the is the largest producer of silk

a)

India

b)

China

c)

America

d)

Africa

37.

Wool is obtained from the ____ of sheep.

a)

Silk

b)

Sheep

c)

Fibre

d)

Fleece

e)

Skin

38.

What source of fibre is this

a)

wool

b)

polyester

c)

cotton

d)

flax

39.

After scouring ,the next process is

a)

Shearing

b)

Sorting

c)

Spinning

d)

Combing

40.

Which is the quality of water waste?

a)

Dirty look

b)

Foul smell

c)

Mixed with lather

d)

All of these

41.

A Chemical Change is also known as what?

a)

Physical Change

b)

Physical Property

c)

Chemical Reaction

d)

Chemical Property

42.

Which of the following could indicate that a chemical change took place?

a)

Change in color

b)

Production of Energy

c)

Formation of Gas

d)

All are correct

43.

Which type of change is most often easily reversed?

a)

Chemical

b)

Physical

c)

Both a physical and chemical change.

d)

Neither a physical or chemical change.

44.

Which of the following is an example of a physical change?

a)

A glass falling and shattering on the floor.

b)

Baking a birthday cake.

c)

Burning a piece of paper.

d)

Baking soda and vinegar mixing together.

45.

Which type of change are irreversible?

a)

Chemical Changes

b)

Physical Changes

c)

Changes in State

d)

Changes in Temperature

46.

During Chemical Reactions, the substances that are used are called?

a)

Precipitate

b)

Corrosion

c)

Reactants

d)

Products

47.
Chemical change or physical change?
a)
Chemical Change
b)
Physical Change
48.
Chemical change or physical change?
a)
Chemical Change
b)
Physical Change
49.
Chemical change or physical change?
a)
Chemical Change
b)
Physical Change
50.
Chemical change or physical change?
a)
Chemical Change
b)
Physical Change
51.
Which of the following is NOT an example of a physical change?
a)
crumpled paper
b)
pencil sharpening
c)
shrunken clothing
d)
sour milk
52.
Ripping up paper ...
a)
Chemical Change
b)
Physical Change
53.
Bubbles form when two or more substances are combined ...
a)
Chemical Change
b)
Physical Change
54.
An explosion occurs ...
a)
Chemical Change
b)
Physical Change
55.
An animal can blend in with its surrounding by using __________________
a)
migration
b)
camouflage
c)
mimicry
d)
prey
56.

Having webbed feet is an adaptation. How do webbed feet help animals survive?

a)

They stay cool in the summer.

b)

They can swim faster.

c)

They can blend in with their surroundings.

d)

They can attack their prey.

57.
About how large is the human heart?
a)
the size of an onion
b)
the size of a fist
c)
4.5 pounds
58.

The heart is made of which of the following types of muscles?

a)

Cardiac muscle

b)

Striated muscle

c)

Smooth muscle

d)

None of the above

59.

Which of the following are chambers of the heart?

a)

Valves

b)

Atrium and ventricle

c)

Arteries and veins

d)

Sinoatrial nerve

60.

What is the arrow pointing to?

a)

vena cava

b)

mitral valve

c)

tricuspid valve

d)

aorta

61.

The right side of the heart contains...

a)

Oxygenated Blood

b)

De-oxygenated Blood

c)

Both Oxygenated and De-oxygenated Blood

d)

Water

62.

kidneys are .....shaped organ

a)

bean

b)

square

c)

rectangular

d)

circcle

63.

Name the male part of the plant

a)

Stigma

b)

Style

c)

Stamen

d)

Sepal

64.

The stamen is made of the

a)

Anther & filament

b)

Anther & petal

c)

Fliament & ovary

d)

Ovary & style

65.

Which part makes the pollen

a)

Stigma

b)

Style

c)

Filament

d)

Anther

66.

The fusion of the male gamete nucleus with the female gamete nucleus to make a zygote

a)

Pollination

b)

Germination

c)

Dispersal

d)

Fertilisation

67.

Root, stem and leaves are called-

a)

Sexual parts

b)

Vegetative parts

68.

The stem of this plant can become a new plant.

a)

Potato

b)

Sugarcane

c)

Ginger

d)

All of theses

69.

In grafting the upper part is known as-

a)

Stock

b)

Scion

c)

Parent plant

70.
What PART of the plant collects water?
a)
leaves
b)
flower
c)
roots
d)
stem
71.
Vascular tissue that transports water and minerals UPWARDS from a plant's roots is known as ______.
a)
Cuticle
b)
Phloem
c)
Stomata
d)
Xylem
72.
Plants COULD NOT survive without _____ and ______.
a)
Transpiration and Gravity
b)
Oxygen and Water
c)
Seeds and Water
d)
Carbon Dioxide and Water
73.

How are coconuts dispersed?

a)

by animals

b)

by water

c)

by wind

74.

How are raspberries dispersed?

a)

by animals

b)

by explosion or bursting

c)

by water

75.

How are dandelion seeds dispersed?

a)

by animals

b)

by explosion or bursting

c)

by wind

76.

When light bounces off a mirror it is ________.

a)

absorbed

b)

reflected

c)

corrected

d)

refracted

77.

Which of the following materials will reflect light the best?

a)

a piece of wood

b)

a glass of water

c)

a plastic spoon

d)

a metal spoon

78.

Which chemical is used to disinfect the water

a)

Washing Soda

b)

Silica

c)

Chlorine

d)

None of the above

79.
Platelets 
a)
allow for gases to exchange
b)
give blood its color
c)
fight infection and disease
d)
help clot blood
80.
The smallest type of blood vessel is the:
a)
nerve
b)
vein
c)
capillary
d)
artery
81.
Transpiration is
a)
the movement of water through a plant from the roots up the stem
b)
the loss of water from the leaves of a plant by the process of evaporation
c)
the flow of water into plant roots by osmosis from the soil
d)
the process of minerals and sugars moving through plant veins
82.
Which of these is true?
a)
Xylem vessels carry water and dissolved minerals up the plant
b)
Phloem tissue carry water and dissolved minerals up the plant
c)
Xylem vessels carry dissolved sucrose up and down the plant
83.

Which of the following is the main circulatory fluid in our body ?

a)

Plasma

b)

Lymph

c)

Blood

d)

None of these

84.

Why is color of blood red?

a)

myoglobin

b)

globulin

c)

heamoglobin

d)

fibrinogen

85.

What is the function of white blood cells?

a)

transport oxygen

b)

fight against infection

c)

clotting

d)

all the above

86.

Pulmonary artery carries what type of blood

a)

Oxygenated

b)

mixed

c)

pure blood

d)

Deoxygenated

87.

Phloem helps in the transport of

a)

Food

b)

water

c)

Food and Water

d)

Oxygen

88.
These blood cells deliver oxygen to the parts of the body.
a)
Red
b)
White
c)
Patelets
d)
Plasma
89.
_______ is made mostly of water and makes up about 55% of the blood
a)
Plasma
b)
Platelets 
c)
Red blood cells
d)
White blood cells
90.
What does blood transport?
a)
Nutrients
b)
Oxygen 
c)
Carbon Dioxide
d)
All of the above
91.

What is the function of arteries?

a)

Transport deoxygenated blood

b)

Transport oxygenated blood

c)

Site for exchange of materials

92.

What is the function of veins?

a)

Transport deoxygenated blood

b)

Transport oxygenated blood

c)

Site for exchange of materials

93.

What is the function of capillaries?

a)

Transports deoxygenated blood

b)

Transport oxygenated blood

c)

Site for exchange of materials

94.

What is the function of valves?

a)

To prevent mixing of oxygenated and deoxygenated blood

b)

To transport blood in one direction

c)

To prevent backflow of blood

95.

Which blood vessel transports oxygenated blood to the rest of the body?

a)

Pulmonary artery

b)

Aorta

c)

Hepatic artery

d)

Renal artery

96.

What is Sludge?

a)

The wastewater and other different types of waste.

b)

A network of pipes that carry sewage.

c)

A dense material that sinks to the bottom of the septic tank.

d)

A material that floats at the top of a septic tank.

97.

What is Sewage?

a)

Wastewater and other different types of waste.

b)

A network of pipes that carry sewage.

c)

A dense material that sinks to the bottom of the septic tank.

d)

A material that floats at the top of a septic tank.

98.

What is Scum?

a)

Wastewater and other different types of waste.

b)

A network of pipes that carry sewage.

c)

A dense material that sinks to the bottom of the septic tank.

d)

A material that floats at the top of a septic tank.

99.

What is a Septic Tank?

a)

A place where wastewater flows through screens to catch large particles.

b)

An underground tank that contains bacteria that treats wastewater.

c)

A place in which the wastewater is filtered through a bed of gravel that is covered with colonies of bacteria.

100.

human excreta and urea are removed by

a)

sludge

b)

bar screen

c)

sea beds

101.

A parent cell breaks into pieces and each piece becomes a new offspring.

a)

Binary Fission

b)

Budding

c)

Fragmentation

d)

Vegetative Reproductions

102.

What type of worm helps in vermicomposting?

a)

Redworms

b)

Ringworms

c)

A snake

d)

Earthworms

103.

Small particles that is made up rocks, soil

a)

river basin

b)

impermeable

c)

water

d)

sediment

104.

In sewer treatment, contaminants are removed

a)

Physically

b)

Biologically

c)

Chemically

d)

All of the above

105.

____ is released during the treatment of sludge.

a)

Methane

b)

Nitrogen

c)

Oxygen

d)

Biogas

106.

The bottom part of the heart is divided into two chambers called what?

a)

Ventricles

b)

Atria

107.

About how many times does your heart beat per minute?

a)

20-60

b)

40-80

c)

60-100

d)

80-120

108.

The heart has a left side and a right side that are separated by a__________

a)

valve

b)

thick wall

c)

ventricle

d)

vein

109.

The right atrium receives____________ blood from the ________.

a)

oxygenated, body

b)

deoxygenated, body

c)

oxygenated, lungs

d)

deoxygenated, lungs

110.

__________are structures that close to prevent blood from going backwards.

a)

ventricles

b)

valves

c)

veins

d)

arteries

111.

in the heart, Each side has an upper chamber ( Called _____

and a lower chamber ( called_______).

a)

atrium, ventricle

b)

artery, vein

c)

atrium, vein

d)

ventricle, atrium

112.

There are three types of vessels:

a)

only capillaries

b)

Atia, veins and capillaries

c)

Arteries, veins and capillaries

d)

Arteries, valves and capillaries

113.

What is the most important circulatory system organ in your body?

a)

Veins

b)

Blood

c)

Lung

d)

Heart

114.

The left-upper side on the image that we discussed is called

a)

Left Atrium

b)

Right Atrium

c)

Left Ventricle

d)

Right Ventricle

115.

Arteries are fulled with blood with high concentration of ___

a)

Oxygen

b)

Nitrogen

c)

Ammonia

d)

Urea

116.

COVID-19 infect one of the organs in circulatory system, which is __

a)

Lungs

b)

Heart

c)

Kidneys

d)

Liver

117.

Statement: There are muscles in the heart

a)

Correct

b)

Incorrect

c)

partially correct

d)

I'm not sure

118.
What is the heart ? 
a)
meaty organ 
b)
a small metal spike with a broadened flat head,
c)
organ of soft nervous tissue 
d)
muscular organ
119.
What is the main function of the heart ? 
a)
The heart circulates blood, oxygen, and nutrients throughout the body.
b)
The heart is the control centers for all body activities.
c)
The heart gets rid of the wastes in your body produced by homeostasis. 
d)
The heart transports , protection and regulation. Blood transports the following substances: 
120.
When looking at the heart, which side is the right?
a)
my right
b)
my left
c)
at the apex
d)
at the base
121.
How many types of blood vessels are in our body?
a)
1
b)
2
c)
3
d)
4
122.
The circulatory system works with the ___________ system to provide our body with oxygen.
a)
respiratory
b)
digestive
c)
muscular
d)
skeletal
123.
The ___________ is the thick muscular wall that seperates the two sides of the heart.
a)
atria
b)
ventricles
c)
valve
d)
septum
124.
The energy that powers photosynthesis comes from
a)
water
b)
chemicals
c)
oxygen
d)
the sun
125.
Gases pass in and out of a leaf through the 
a)
stomata
b)
phloem
c)
xylem
d)
cuticle
126.
All of the following is a root function, except
a)
water absorption
b)
food storage
c)
plant anchoring
d)
food production
127.
Which is a function of the stem?
a)
to be green
b)
to support the plant
c)
to absorb nutrients from the soil
d)
to talk about science, technology, engineering, and math
128.
Which is a function of the leaves?
a)
to provide shade
b)
to attract pollinators
c)
to make food through photosynthesis
d)
to absorb nutrients
129.
Which is a function of the flower?
a)
attract pollinators and produce seeds for reproduction
b)
to make food through photosynthesis
c)
to be pretty
d)
to absorb nutrients from the soil
130.

What is the first stage of the plant life cycle?

a)

seedling

b)

seed

c)

adult plant

d)

germination

131.

This part of the plant produces seeds and creates pollen.

a)

roots

b)

flower

c)

stem

d)

leaves

132.

If it's a hot day outside, what can you conclude?

a)

There are a lot of clouds in the sky

b)

The air can hold a lot of moisture

c)

The wind is blowing extremely fast

d)

The air can hold very little moisture

133.

Why can't you see the water vapor in the air?

a)

It exists as a clear, colorless gas

b)

It's all been condensed

c)

There is very little of it

d)

It's all far away, in the upper atmosphere

134.

What causes differences in air pressure?

a)

even heating of the Earth

b)

Even cooling of the earth

c)

uneven heating of the earth

d)

global warming

135.
Why does warm air rise?
a)
Warm air is more dense than cooler air.
b)
Warm air has more pressure than cooler air.
c)
Warm air is less dense than cooler air.
d)
Warm air has a higher dew point than cooler air.
136.
Which statement correctly defines wind?
a)
Wind is the movement of air from areas of low pressure to areas of high pressure
b)
Wind is the movement of air to a colder area in the atmosphere.
c)
Wind is the movement of air from areas of high pressure to areas of low pressure.
d)
Wind is the movement of air pushed around and bouncing off Earth's surface.
137.
What is the scientific term for an animal that is eaten by another animal?
a)
predator
b)
dinner
c)
prey
d)
stupid
138.
Lions often hide in the tall grass while stalking their prey.  This is an example of...
a)
camouflage
b)
warning coloration
c)
mimicry
d)
hibernation
139.

in which of the following a small projection is formed on the

during reproduction

a)

budding

b)

spore formation

c)

vegetative reproduction

d)

binary fission

140.

which of these is not a mode of artificial vegitative reproduction.

a)

grafting

b)

layering

c)

cutting

d)

none of these

141.

When the offspring are identical to the parent, this is ________________ reproduction?

a)

Heredity

b)

Sexual

c)

Asexual

d)

Chromosome

142.

All seeds have

a)

Seed Coat

b)

Embryo

c)

Food Store

d)

All of the above

143.

What do seeds need to germinate (grow into a new plant)? (You may select more than one answer)

a)

Air (oxygen)

b)

Water

c)

Warmth

d)

All answers

144.

The seed is protected by an outer covering called:

a)

seed coat

b)

food store

c)

germination

d)

embryo

145.

What part of the seed provides food for the plant as it begins to grow?

a)

food store (cotyledon)

b)

embryo

c)

seed coat

146.

A seed is.....

a)

a fruit of a plant.

b)

a small part that grows on the stem.

c)

a small part produced by the plants.

147.

A virtual image can be collected on a screen.

a)

True

b)

False

148.

Light travels in a straight line.

a)

True

b)

False

149.

Guess the answer

a)

Light

b)

Shadow

c)

Rectilinear propagation of light

d)

Eclipse

150.
what is the angle between the incident ray and the normal called as
a)
angle of incidence
b)
angle of reflection
c)
angle of convergent
d)
angle of divergent
151.
If the angle of incidence is 45 degree, what is the angle between the incident ray and reflecting surface
a)
45
b)
90
c)
180
d)
none of the above
152.

Which diagram represents specular reflection?

a)

A

b)

B

153.

The two types of spherical mirrors are ...............

a)

flat and plane

b)

concave and plane

c)

convex and concave

d)

plane and rectangular

154.

Spherical mirrors are part of a

a)

Rectangle

b)

Cube

c)

Sphere

d)

Cone

155.
Real images are :
a)
Always inverted
b)
Magnified or Diminished
c)
can be obtained on screen
d)
all the above
156.
The following is a picture of what type of mirror? 
a)
Convex Mirror
b)
Concave Mirror
c)
Plane Mirror
d)
Flat Mirror
157.
The following is a picture of what type of mirror? 
a)
Convex Mirror
b)
Concave Mirror
c)
Plane Mirror
d)
Flat Mirror
158.
How is light affected by an increase in the index of refraction?
a)
Its frequency increases
b)
Its frequency decreases
c)
Its speed increases
d)
Its speed decreases
159.
The velocity of light in vacuum is _______ m/s
a)
3x108
b)
3x1012
c)
3x106
d)
3x1010
160.
How does light behave as it enters these mediums?
a)
continue its path as straight line.
b)
bends toward the normal
c)
bends away from the normal
d)
reflects
161.
What is this called?
a)
refraction
b)
reflection
c)
reconstroction
d)
retraction
162.

sunlight called white light consits of __________________

colours

a)

1

b)

5

c)

0

d)

7

163.

Which has the least energy among the colours of a rainbow?

a)

Green

b)

Orange

c)

Red

d)

Violet

164.

Which of the following colors has the highest energy?

a)

Orange

b)

Red

c)

Violet

d)

Yellow

165.

___________is an artificial light

a)

Sun

b)

Moon

c)

Fireflies

d)

Volcano

166.

The magnifying glass is also called:

a)

Lens

b)

Concave lens

c)

Convex lens

d)

None of these

167.

Light obtained from sun is

a)

Red

b)

Blue

c)

White

d)

Black

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