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Worksheets

STEM 7/8/2022

Total questions: 200

Worksheet time: 2hrs 10mins

Name
Class
Date
1.

What is force?

a)

Pull and push that acts upon object.

b)

Lft things up with hands.

c)

What is moving is force.

d)

Power is the use of tools to get work do

2.
Calculate the net force of the object in the image shown.
a)
20N
b)
35N
c)
5N
d)
25N
3.

What is the net force?

a)

3 N

b)

3 N, right

c)

17 N, right

d)

3 N, left

4.
What is the net force?
a)
20 N 
b)
0 N 
c)
400 N 
d)
40 N 
5.

A ____________ is a push or a pull on an object.

a)

friction

b)

force

c)

magnet

d)

gravity

6.
If these teams are pulling with the same amount of force what will happen?
a)
The boy in blue will win.
b)
They will not move at all.
c)
The boy in red will win.
d)
Both will fall down.
7.

Forces that have a net force of zero Newtons

a)

Balanced force

b)

Unbalanced force

8.
The sum of all forces acting on an object.
a)
Contact Force
b)
Balanced Force
c)
Unbalanced Force
d)
Net Force
9.
What will cause an object to move?
a)
Applied forces
b)
Balanced forces
c)
Unbalanced forces
10.
With unbalanced forces, the object will move in the direction of the _______ force.
a)
larger 
b)
smaller 
c)
equal 
11.
A force is a push or pull measured in what units? 
a)
Meters per second, squared
b)
Kilograms 
c)
Newtons 
12.
If an object is not moving the forces acting upon it are _____________
a)
unbalanced
b)
weak
c)
balanced
d)
Hulk Smash!
13.

A force of attraction to objects with steel or iron

a)

friction

b)

force

c)

magnetism

d)

gravity

14.

Force that pulls things toward the Earth

a)

gravity

b)

force

c)

friction

d)

magnetism

15.

A force that happens when rubbing objects together

a)

magnetism

b)

force

c)

gravity

d)

friction

16.

The movement over a distance in a time frame

a)

magnetism

b)

force

c)

speed

d)

friction

17.

pushing a chair across the carpet involves

a)

friction

b)

magnetism

c)

gravity

18.

The moment the roller coaster starts to move toward the Earth.

a)

magnetism

b)

friction

c)

gravity

19.

Light travels in a ___________ line

a)

reflected

b)

retracted

c)

straight

d)

zig zag

20.

electricity flows in a ______________ circuit

a)

closed

b)

open

c)

smooth

d)

loud

21.

All of these are types of energy except

a)

mechanical

b)

light

c)

flexible

d)

electrical

22.

Sand and water when stirred forms a

a)

mixture

b)

solution

23.

When salt dissolves in water it is called

a)

salty

b)

soluble

c)

evaporation

d)

precipitation

24.

Matter has _________________that can be measured, tested and observed.

a)

atoms

b)

blue parts

c)

physical properties

25.

Relative Density has to deal with

a)

sink/float

b)

salt water

c)

temperature

d)

magnetism

26.

Which of these is an insulator?

a)

metal spoon

b)

cotton ball

c)

paper clip

d)

ball of foil

27.

Which is a conductor?

a)

rubber

b)

foam

c)

plastic

d)

steel

28.

Force that pulls things toward the Earth

a)

gravity

b)

force

c)

friction

d)

magnetism

29.

A force that happens when rubbing objects together

a)

magnetism

b)

force

c)

gravity

d)

friction

30.

The movement over a distance in a time frame

a)

magnetism

b)

force

c)

speed

d)

friction

31.

pushing a chair across the carpet involves

a)

friction

b)

magnetism

c)

gravity

32.

The moment the roller coaster starts to move toward the Earth.

a)

magnetism

b)

friction

c)

gravity

33.

Light travels in a ___________ line

a)

reflected

b)

retracted

c)

straight

d)

zig zag

34.

Transparent and brittle (breaks easily)

a)

Metal

b)

Sponge

c)

Glass

d)

Plastic

35.

Shiny and conducts electricity

a)

Glass

b)

Plastic

c)

Rubber

d)

Metal

36.

Flexible and elastic

a)

Fabric

b)

Glass

c)

Rubber

d)

Wood

37.

Transparent and flexible

a)

Rubber

b)

Plastic

c)

Fabric

d)

Metal

38.

Weak and absorbent

a)

Fabric

b)

Cardboard

c)

Plastic

d)

Glass

39.

Waterproof material

a)

Plastic

b)

Wood

c)

Fabric

d)

Paper

40.
The ability of a material to withstand a force without breaking or bending
a)
durability
b)
hardness
c)
toughness
d)
strength
41.
The ability of a material to conduct heat or electrical energy
a)
conductivity
b)
ductility
c)
malleability
d)
fusibility
42.

What is the name of this tool"

a)

Metal cutting band saw

b)

Sawzall

c)

Jigsaw

d)

Router

43.

What tools can you use to scale drawings or models?

a)

Yard Stick, Measuring Tape

b)

Ruler, Graph paper

c)

Body Scale, Balance

d)

Level, Protractor

44.

The most important part of the home which supports the entire house is know as the

a)

foundation

b)

roof

c)

electrical

d)

concrete

45.

Gases that surround the Earth is called:

a)

Weather

b)

Atmosphere

c)

Air Pressure

d)

Climate

46.

Air pressure________________ as altitude increases, due to the lower density of air molecules.

a)

stays the same

b)

increases

c)

never changes

d)

decreases

47.

Why would you have more trouble breathing at the top of a mountain than you would at sea level?

a)

Oxygen is more dense at the mountaintop.

b)

Oxygen is less dense at the mountaintop.

c)

Carbon dioxide is more dense at the mountaintop.

d)

Carbon dioxide is less dense at the mountaintop.

48.

What gas is the MOST abundant in the Earth’s atmosphere?

a)

oxygen

b)

carbon dioxide

c)

argon

d)

nitrogen

49.

An instrument that measures changes in air pressure, consisting of a glass tube partially filled with liquid mercury:

a)

Aneroid Barometer

b)

Mercury Barometer

c)

Thermometer

d)

Anemometer

50.

An instrument used to measure changes in air pressure is:

a)

Thermometer

b)

Barometer

c)

Anemometer

d)

Wind Vane

51.

An instrument that measures changes in air pressure without using a liquid:

a)

Mercury Barometer

b)

Aneroid Barometer

c)

Thermometer

d)

Wind Vane

52.

The pressure caused by the weight of a column of air pushing down on an area:

a)

Water Pressure

b)

Air Pressure

c)

Density

d)

Friction

53.

The amount of force pushing on an area is:

a)

Pressure

b)

Friction

c)

Gravity

d)

Density

54.

The amount of mass of a substance in a given volume is:

a)

Weather

b)

Climate

c)

Pressure

d)

Density

55.

A form of oxygen that has 3 oxygen atom in each molecule instead of the usual 2:

a)

water vapor

b)

oxygen gas

c)

ozone

d)

carbon dioxide

56.

The condition of Earth's atmosphere at a particular time and place:

a)

Climate

b)

Weather

c)

Air Pressure

d)

Atmosphere

57.

Water in the form of a gas is called:

a)

Carbon Dioxide

b)

Liquid Nitrogen

c)

Ice

d)

Water vapor

58.

Gases that surround the Earth is called:

a)

Climate

b)

Weather

c)

Atmosphere

d)

Air Pressure

59.

Which of the chemical formula are matched correct? Check all that apply!

a)

water: H2O

b)

carbon dioxide CH4

c)

oxygen O2

d)

ozone O3

60.

Why is the atmosphere important for living things on Earth? Check all that apply!

a)

Insulates the temperature

b)

Burns out meteors

c)

Contains oxygen needed to breathe

d)

Traps in water

61.

What solid particles are found in the atmosphere? Check all that apply!

a)

Dust

b)

Smoke

c)

Salt

d)

Water Vapor

62.

LESS dense air is found at:

a)

sea level

b)

higher altitudes

63.

MORE dense air is found at:

a)

sea level

b)

higher altitudes

64.

Less dense air has ________ air pressure.

a)

LOW

b)

HIGH

65.

More dense air has ________ air pressure.

a)

LOW

b)

HIGH

66.

What force pulls air molecules to the ground?

a)

Friction

b)

Gravity

c)

Balanced

67.

The Earth's atmosphere protects life from harmful uv radiation.

a)

TRUE

b)

FALSE

68.

Air has mass.

a)

TRUE

b)

FALSE

69.
The force of a column of air pressing down is called what?
a)
Air Mass
b)
Air Pressure
c)
Air
d)
Heavy
70.
What is the instrument called that measures air pressure?
a)
thermometer
b)
ruler
c)
yard stick
d)
barometer
71.
The air pressure is _____ when closest to the earth's surface.
a)
low
b)
stinky
c)
high
d)
thin
72.
What does a barometer measure?
a)
air pressure
b)
water level
c)
wind direction
d)
wind speed
73.
The __, or elevation of a mountaintop is its distance above sea level.
a)
greenhouse effect
b)
altitude
c)
convection
d)
weather
74.
Air pressure is greatest when near Earth's surface because?
a)
The air molecules are farther apart.
b)
The air molecules are closer together.
c)
Air molecules collide.
d)
Air molecules are tightly packed.
75.
What happens to air pressure as you move upward into the atmosphere?
a)
increases
b)
decreases
c)
stays the same
76.
Density of air is greater at high altitudes.
a)
true
b)
false
77.
High pressure will usually bring what kind of weather?
a)
clear and dry
b)
cloudy and wet
78.
_______ pressure systems are characterized by fair weather.
a)
High
b)
Low
79.
On a cold, cloudy day, the local weather forecaster predicts that a high-pressure system will be moving into the area in the next 24 hours. Which weather conditions will this system most likely bring to the area?
a)
stormy
b)
sunny
c)
snowy
d)
hot
80.
Michael observes the air pressure daily. Over the last couple of days the air pressure has been dropping. What weather will Michael most likely observe as a result?
a)
increasingly clear skies and more wind
b)
increasingly clear skies and dry weather
c)
increasingly cloudy skies and possible storms
81.
Which is the best indicator that precipitation is on the way?
a)
low pressure
b)
low humidity
c)
low temperature
82.
This instrument measures air pressure
a)
thermometer
b)
anemometer
c)
barometer
d)
wind vane
83.
What type of air pressure is present?
a)
High 
b)
Low
84.
What type of air pressure is present?
a)
High 
b)
Low
85.

Where does the air move in a CYCLONE?

a)

Upwards

b)

Downwards

86.

Where does the air move in an ANTICYCLONE?

a)

Upwards

b)

Downwards

87.

What type of weather does a CYCLONE bring?

a)

Clear and calm

b)

Stormy

88.

What type of weather does an ANTICYCLONE bring?

a)

Clear and calm

b)

Stormy

89.

Does a CYCLONE have low or high pressure?

a)

Low

b)

High

90.

Does an ANTICYCLONE have low or high pressure?

a)

Low

b)

High

91.

Would climate change create more CYCLONES or ANTICYCLONES?

a)

Cyclones

b)

Anticyclones

92.

The oceans are getting warmer. Will this INCREASE or DECREASE the power of cyclones?

a)

Increase

b)

Decrease

93.

The effect of Earth’s rotation on the direction of winds and currents is called the _______________ .

a)

La Niña

b)

El Niño

c)

Coriolis effect

d)

Currents

94.

Which of the following is the natural source of water?

a)

Pool

b)

Rain

c)

A pail of water

d)

Ice cream

95.

all of these are the natural sources of water except

a)

Lake

b)

Rain

c)

River

d)

Pool

96.

water flows from ___________area to __________ area

a)

Low,low

b)

Low,high

c)

High,high

d)

High,low

97.

What is the process shown in the diagram?

(a)  

98.

At which stage does the water vapour turn to cloud?

a)

1

b)

2

c)

3

d)

4

99.

Water turns to water vapour at _______________ stage

a)

3

b)

2

c)

4

d)

1

100.

Which of the following need oxygen?

a)

Human

b)

Bees

c)

Frog

d)

Cow

101.

wind does not help our cloth to dry faster

a)

True

b)

False

102.

What is the benefit of strong wind?

a)

Storm

b)

Tornado

c)

Moving yatch

103.

strong wind can cause harms so humans such as

a)

Dry cloth faster

b)

Moving yatch

c)

storm

d)

Move the object

104.

List all the reproduction method for plants.

4 lines
105.

Which of the following plant reproduce through stem cutting ?

a)

Tapioca plant

b)

Banana tree

c)

Bougainvillea

d)

Yam Plant

e)

Rose Plant

106.

Which of the following plants reproduces through stem cutting?

a)

Mimosa plant

b)

Mango tree

c)

Hibiscus plant

d)

Balsam plant

107.

Which of the following plants has the same reproduction method as the pumpkin?

a)

Ginger plant

b)

Pineapple plant

c)

Papaya tree

d)

Tapioca

108.

Which of the following plants reproduces through underground stems?

a)
b)
c)
d)
109.

Which of the following is not the importance of plant reproduction?

a)

Supply carbon dioxide

b)

Habitat for animals

c)

Source of food

d)

Source of wood

110.

The diagram above shows an orchid plant. What is the suitable reproduction technology for an orchid?

a)

Tissue cutting

b)

Stem cutting

c)

Marcottage

d)

Suckers

111.

Rice is the product from the paddy plant that is used as (a)   for humans.

112.

Plants are important because the become a (a)   to other living things.

113.

Plants are important because they supply (a)   to humans and animals.

114.

Rewrite square centimetre in symbols.

4 lines
115.

We can use _________________ and __________________ to measure a regular surface area.

(a)  

116.

What is the suitable measurement unit for the surface area of a carpet ?

a)

Square metre

b)

Square centimetre

c)

Square milimetre

d)

Square kilometre

117.

What is the suitable unit for volume in the above diagram?

a)

Litre

b)

Millilitre

c)

Kilometre

d)

Cubic metre

118.

Which of the following is not a standard not a standard unit for volume?

a)

Cubic metre

b)

Square centimetre

c)

Litre

d)

Millilitre

119.

How many cards with size of 1 cm x 1 cm are needed to fill the shape?

a)

11 cards

b)

21 cards

c)

24 cards

d)

12 cards

120.

What is the suitable unit to measure the area of both Sabah and Sarawak?

a)

Square millimetre

b)

Square metre

c)

Square centimetre

d)

Square kilometre

121.

There is a box with length 3 cm, width 6 cm and height 4 cm. Predict the number of cubes with size 1cm x 1cm x 1cm needed to fill the box.

a)

72

b)

74

c)

78

d)

68

122.

Calculate the are of the shape.

a)

80 cm2cm^2

b)

79 cm2cm^2

c)

81 cm2cm^2

d)

82 cm2cm^2

123.

What is the method used to measure the volume of an irregular object?

a)

Water displacement method

b)

Using graph paper

c)

Density of water

d)

Buoyancy

124.
Yogurt and cheese  can be produced from ___________.
a)
Bacteria
b)
Virus
c)
Protozoa
d)
Algae
125.
Bacteria is known as ______________ in an ecosystem when feeding on dead organisms.
a)
decomposers
b)
herbivores
c)
pathogens
d)
infections
126.
Fungi is benefical to us because of the following reason:
a)
They are a source of oxygen
b)
They can clean up pollution
c)
They are a source of antibiotics
d)
They help to clean run off from waste
127.
What is true about bacteria?
a)
Bacteria use photosynthesis to make their own food
b)
Bacteria can only be found in dirt
c)
Bacteria is always beneficial
d)
Bacteria can be used to make certain foods
128.
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
129.
Why is a microscope needed to view cells?
a)
to separate cells from each other 
b)
to make cells look bigger than they are
c)
to make cells look smaller than they are
d)
to hold the cells still so they can be seen
130.
Bacteria are made up of how many cells?
a)
1
b)
2
c)
3
d)
trillions!
131.
Mold helps dead things (plants, animals)...
a)
Grow
b)
Decay
c)
Sleep
d)
Reproduce
132.

What is a cell?

a)

Is a smallest part of living thing

b)

Fiber

c)

Nutrients

d)

Wastes

133.
What type of instrument would you use to look at cells?
a)
Telescope
b)
Giroscope
c)
Microscope
d)
None of the above
134.

Microorganisms need certain condition to stay alive and grow. Which of the following condition that is not suitable for microorganism to grow.

a)

present of water

b)

present of oxygen

c)

warmth temperature

d)

cold temperature

135.

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

a)

Bacteria

b)

Fungus

c)

Virus

d)

Protist

136.

Which of the following micro-organisms is called animal-liked because they have special feature to move like animal?

a)

fungi

b)

algae

c)

bacteria

d)

protozoa

137.

How do yeast reproduce?

a)

cell division

b)

budding

c)

spores

d)

fission

138.

Which micro-organism causes TBC disease?

a)

bacteria

b)

fungi

c)

virus

d)

protozoa

139.

Which microorganism helps to make yoghurt?

(a)  

140.

What gas is produced by yeast in making bread?

(a)  

141.

Mention three advantange / useful of microorganisms.

4 lines
142.

Explain how to prevent our food from decaying by microorganisms.

4 lines
143.

Beside useful, microorganisms can be also harmful. Explain two disadvantages of microorganisms.

4 lines
144.
Are microorganisms helpful or harmful?
a)
Helpful
b)
Harmful
c)
Both
d)
Neither
145.
What is Penicillin (medicine) made from?
a)
Water
b)
Sugar
c)
Mold
d)
Algae
146.
What is the difference between an autotroph and a heterotroph?
a)
Heterotrophs are producers and autotrohps are consumers
b)
Heterotrophs cannot be changed and autotrophs can change themselves
c)
Heterotrophs are consumers and autotrophs are producers
d)
Heterotrophs cannot move and autotrophs can move
147.
This microorganism has whip-like flagella, that help them move.
a)
Virus
b)
Bacteria
c)
Algae
d)
Fungi
148.

Nitrogen-fixing bacteria are important because...

a)

They are decomposers

b)

They are salt lovers

c)

They provide protection for plants from diseases

d)

They make nitrogen available to plants in form they can use

149.

All viruses contain this

a)

Nucleus and DNA or RNA

b)

DNA or RNA and protein coat

c)

Protein coat and nucleus

d)

Cell wall and DNA or RNA

150.

What is a cell?

a)

Is a smallest part of living thing

b)

Fiber

c)

Nutrients

d)

Wastes

151.

You can find bacteria all over the world.

a)

True

b)

False

152.

Which is the smallest of all microorganisms?

a)

Algae

b)

Fungi

c)

Virus

d)

Bacteria

153.

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

a)

Bacteria

b)

Fungus

c)

Virus

d)

Protist

154.
What type of instrument would you use to look at cells?
a)
Telescope
b)
Giroscope
c)
Microscope
d)
None of the above
155.

Select the disease which can be treated with antibiotics.

a)

Swine Flu

b)

Influenza

c)

COVID 19

d)

Bacterial infection

156.

A disease causing organism

a)

Pathogen

b)

Poison

c)

Vaccine

d)

Prokaryote

157.

Which of these is an example of an antibiotic?

a)

Pencillin

b)

Tylenol

c)

Advil

d)

Tumms

158.

How animals get the nitrogen they need

a)

From the air they breathe

b)

From the water they drink

c)

From the food they eat

d)

From the Sun

159.

Organisms that need nitrogen to survive

a)

Only plants

b)

Only animals

c)

Only bacteria

d)

All living organisms

160.

Bacteria fix nitrogen on plant roots where plant roots provide sugar to bacteria. This is an example of

a)

Mutualism

b)

Parasitism

c)

Commensalism

d)

Competition

161.

How nitrogen is "fixed" into useable form for plants

a)

Only through action of bacteria

b)

Only through lightning

c)

Through action of bacteria & lightning

d)

Through photosynthesis

162.

Gas that makes up almost 78% of Earth's atmosphere

a)

Oxygen

b)

Carbon dioxide

c)

Nitrogen

d)

Hydrogen

163.

Organism that breaks down dead plants & animals and releases nitrogen back into atmosphere

a)

Bacteria

b)

Plants

c)

Animals

d)

Producers

164.

What is the definition of Symbiosis?

4 lines
165.

In mutualism, both organisms (a)  

166.

In parasitism, one organism benefits while the other gets (a)  

167.

In commensalism, one organism benefits while the other one is (a)  

168.

Definition of Prey

a)

animal that is hunted for as food

b)

animal that hunts organisms for food

169.

Definition of Predator

a)

animal that is hunted for as food

b)

animal that hunts other animals for food

170.

Select the best symbiotic relationship that these two organisms would express

a)

mutualism

b)

commensalism

c)

parasitism

171.

Select the best symbiotic relationship that these two organisms would express

a)

mutualism

b)

commensalism

c)

parasitism

172.

Select the best symbiotic relationship that these two organisms would express

a)

mutualism

b)

commensalism

c)

parasitism

173.

Select the best symbiotic relationship that these two organisms would express

a)

mutualism

b)

commensalism

c)

parasitism

174.

Select the best symbiotic relationship that these two organisms would express

a)

mutualism

b)

commensalism

c)

parasitism

175.

Select the best symbiotic relationship that these two organisms would express

a)

mutualism

b)

commensalism

c)

parasitism

176.

Select the best symbiotic relationship that these two organisms would express

a)

mutualism

b)

commensalism

c)

parasitism

177.

Select the best symbiotic relationship that these two organisms would express

a)

mutualism

b)

commensalism

c)

parasitism

178.

As prey population goes up... predator populations go (a)  

179.

As prey population numbers go down, which means a decrease in food for predators... predator population numbers go...

(a)  

180.

There are many different types of

a)

plants

b)

water

c)

sunlight

181.

Plants come in all sorts of different ------------

a)

shapes and sizes

b)

sizes

c)

names

d)

shapes

182.

Some plants are very small like: ----------------.

a)

grass

b)

pine tree

c)

banana tree

d)

maple tree

183.

Some plants grow very large like: -----------.

a)

grass

b)

tree

c)

shrubs

d)

herbs

184.

Cactuses grow in the

a)

ocean

b)

desert

c)

forest

185.

Trees grow in

a)

river

b)

forest

c)

desert

186.

this flower is ------------

a)

rose

b)

tulip

c)

cotton

187.

This flower is ------------

a)

rose

b)

tulip

c)

cotton

188.

Plants make ------- which grow into new plants

a)

seeds

b)

leaves

c)

trunks

189.

A tomato plant is smaller than an orange tree.

a)

yes

b)

no

190.

Flowers on a tomato plant are-----------

a)

yellow

b)

green

c)

white

191.
An endangered species is
a)
One whose numbers are so small that it is at risk of extinction
b)
One whose not been spotted after many years.
c)
One whose numbers are abundant.
192.
A species is defined as endangered when it
a)
suffers from damage to its habitat.
b)
suffers from disease or predation.
c)
when there are hazards to the continued life of the species.
d)
all of the above
193.
The Endangered Species Act of 1973 protects registered endangered species by removing them from the "take" list which makes it unlawful to
a)
shoot
b)
capture
c)
trap
d)
all of the above
194.
What is the main cause of extinction of tigers?
a)
hunting
b)
climate change.
c)
disease.
d)
building of new homes
195.
Which of the following does not destroy habitats?
a)
building homes
b)
pollution
c)
nature reserves
d)
hunting and trading
196.
Who can help save endangered species?
a)
environmentalist
b)
you
c)
scientists
d)
all of the above!
197.
The world's most endangered species include
a)
Tigers
b)
Elephants
c)
Rhinos
d)
all of the above
198.
What does it mean when an animal is extinct?
a)
Something once lived but no longer exists.
b)
Animals that is at risk of extinction.
c)
Place that protects animals at risk.
199.
Why is it important to protect and conserve animal species?
a)
So that the animal have food to eat.
b)
So that the animal have a place to stay.
c)
So that we can see the animal on Earth in the future.
200.

An animal that might become endangered if nothing is done is considered __________.

a)

extirpated

b)

threatened

c)

extinct

d)

vulnerable