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Science Test

Total questions: 143

Worksheet time: 2hrs 58mins

Name
Class
Date
1.

What is work?

a)

The use of a force to move an object across a distance.

b)

Solving a math problem.

c)

A simple machine.

d)

When you don't move an object.

2.

Read and choose the correct simple machine.


Is made of a round object, a wheel, attached to a post, called an axle.

a)

Wheel and axle

b)

Wedge

c)

Lever

d)

Inclined plane

3.

Read and choose the correct simple machine.


Is a simple machine made from two slanted sides that end in a sharp edge.

a)

Wheel and axle

b)

Wedge

c)

Lever

d)

Inclined plane

4.

Read and choose the correct simple machine.


Is a stiff bar that rests on a support.

a)

Wheel and axle

b)

Wedge

c)

Lever

d)

Inclined plane

5.

Read and choose the correct simple machine.


... or a ramp, is a slanted surface.

a)

Wheel and axle

b)

Wedge

c)

Lever

d)

Inclined plane

6.

Read and choose the correct simple machine.


Can make work easier in two ways. It can decrease the amount of force needed to move an object. It can also change the direction that the force is applied.

a)

pulley

b)

screw

c)

Lever

d)

Inclined plane

7.

Read and choose the correct simple machine.


Is an inclined plane wrapped around a center post.

a)

pulley

b)

screw

c)

Lever

d)

Inclined plane

8.

What is the design process?

a)

Is a step-by-step method used to solve a problem.

b)

A force to move an object.

c)

A solution is an answer to a problem.

d)

An engineer is any person who designs new technology.

9.

Which is the first step in the design process?

a)

Identify the problem

b)

Do research

c)

Develop possible solutions

d)

Choose one solution

10.

What is an engineer?

a)

A person who designs new technologies.

b)

A simple machine.

c)

A wheel and axle.

d)

The use of a force to move an object.

11.

What is a complex machine?

a)

These are made up of two or more simple machines that work together.

b)

The force to move an object.

c)

A person who designs new technologies.

d)

An inclined plane.

12.

___ is made from limestone and is used for building.

a)

Granite.

b)

Cement

c)

Sand.

13.

___ is made from limestone and is used for building.

a)

Granite.

b)

Cement

c)

Sand.

14.

Which of these protects the building from rain and sun?

a)

Roofing sheets.

b)

Nails.

c)

Windows.

15.

A structure that has wall and roof is called _____.

a)

Structure.

b)

Building.

c)

Space.

16.

____ is the skeleton outside the body.

a)

Exoskeleton

b)

Endoskeleton

c)

Hydro-skeleton

17.

Bones found in the nose and the outer part of the ear are called _____

a)

Spongy bones.

b)

Compact bones.

c)

Cartilage.

18.

All are functions of skeleton except ____

a)

It protects some vital organs of the body.

b)

It provides framework.

c)

It prevents us from having Malaria.

19.

_____ are body building foods

a)

Carbohydrates.

b)

Vitamins.

c)

Proteins.

20.

Which of these classes of food protect us from sickness and diseases?

a)

Vitamins

b)

Minerals

c)

Carbohydrates

21.

What is energy?

a)

Energy is the ability to sing.

b)

Energy is the ability to do work.

c)

Energy is the ability to fight

22.

When ice is heated, it change to

a)

Steam

b)

Solid

c)

Gas

d)

Liquid

23.

________ occurs when a solid is heated and it changes into a liquid.

a)

Condensation

b)

Freezing

c)

Evaporation

d)

Melting

24.

Boiling occurs when a liquid is heated and it changes into a

a)

Solid

b)

Liquid

c)

Gas

d)

Ice

25.

Which of these statements describes a solid?

a)

Takes on the shape of th container

b)

Does not change shape easily.

c)

Cannot be squashed

d)

Is often colourless

26.

What is the boiling point of water?

a)

0°C

b)

100°C

c)

80°C

d)

-100°C

27.

Butter begins to melt at

a)

35°C

b)

20°C

c)

80°C

d)

350°C

28.

Water begins to freeze at

a)

0°C

b)

1000°C

c)

10°C

d)

100°C

29.

Gases condense into

a)

Liquids

b)

Solids

c)

Ice

d)

Steam

30.

Liquids evaporates into

a)

Gases

b)

Solids

c)

Steam

d)

Ice

31.

A state of matter is called a

a)

Plasma

b)

Surface

c)

Phase

d)

Particle

32.

Germination is _________________________________.

a)

when a seed starts to grow

b)

when an egg and pollen join together

c)

when pollen moves stamen to stigma

d)

when a plant makes its own food.

33.

A seed needs __________, __________ and a __________ to germinate.

a)

soil, water, air

b)

suitable temperature, water, sunlight

c)

air, water, suitable temperature

d)

water, air, sunlight

34.

What do you call to the process where plants make their own food?

a)

Germinate

b)

Nutrients

c)

Photosynthesis

d)

Plant Life

35.

The part of a plant that grows into a new plant.

a)

food store

b)

roots

c)

seed

d)

flower

36.

Precipitation means...

a)

water vapor cooling to form clouds

b)

water running downhill

c)

water falling from the sky

d)

water heating up and rising as gas

37.

Condensation means...

a)

water vapor cooling to form clouds

b)

water running downhill

c)

water falling from the sky

d)

water heating up and rising as gas

38.

Evaporation means...

a)

water vapor cooling to form clouds

b)

water running downhill

c)

water falling from the sky

d)

water heating up and rising as gas

39.

During condensation water changes from ....

a)

solid ice to liquid water

b)

liquid water to water vapor (gas)

c)

water vapor (gas) to liquid water drops

40.

Water falls from the sky in...

a)

evaporation

b)

condensation

c)

precipitation

41.
Snow, sleet, hail, and rain are all examples of  ________________. 
a)
evaporation
b)
condensation
c)
accumulation
d)
precipitation
42.

Which planet is the eighth (8th) from the Sun?

a)
b)
c)
d)
43.
Made of ice, dust and gas
a)
asteroid
b)
meteoroid
c)
comet
d)
meteor
44.

_____________ are minor plants

a)

asteroid

b)

meteors

c)

comet

45.

___________ are the glowing spheres of gas and dust

a)

comet

b)

asteroid

46.

Huge chunk of stone and metal leftover from the creation of solar system

a)

asteroid

b)

comet

47.

A complete pathway for the flow of electricity is called a ________

a)

series

b)

current

c)

circuit

d)

wire

48.

A simple device that opens and closes an electric circuit is called a/an _________

a)

Connection

b)

Switch

c)

Electrons

d)

Power source

49.

A circuit is a path taken by a current. A path with no breaks is called a ____________

a)

closed-circuit

b)

switch

c)

series circuit

d)

circuit breaker

50.

Which of these is NOT a source of electrical energy?

a)

Solar cell

b)

Battery

c)

Generator

d)

None of the above

51.

Light energy is collected from the Sun using _________

a)

Mirrors

b)

Solar panels

c)

Electrical panels

d)

Wires

52.

All of the following objects are examples of things that produce light energy EXCEPT_______

a)

Candle

b)

Compass

c)

Desk lamp

d)

Flashlight

53.

How is light energy different from sound energy?

a)

Light energy moves slower

b)

Light energy uses vibrations and sound energy does not

c)

Light energy is what you see and sound energy is what you hear

d)

Light energy is in a cell phone and sound energy is not

54.

The device in the picture transfers electrical energy to ___________ energy

a)

thermal

b)

solar

c)

sound

d)

light

55.

The picture shows a lamp giving off light. What form of energy does the lamp use to produce light?

a)

Thermal

b)

Electrical

c)

Mechanical

d)

Light

56.

Lightning is an example of ________

a)

fast electricity

b)

static electricity

c)

current electricity

d)

none of the above

57.

What kind of energy transfer occurs in a toaster?

a)

Electrical energy to thermal energy

b)

Mechanical energy to thermal energy

c)

Thermal energy to light energy

d)

Thermal energy to mechanical energy

58.

Heat is another name for _________

a)

Solar energy

b)

Electrical energy

c)

Thermal energy

d)

Mechanical energy

59.

Which of the following items is NOT a part of a simple series circuit?

a)

Load

b)

Tester

c)

Power source

d)

Wire

60.

Which of these best completes the circuit in the diagram?

a)

rubber band

b)

metal nail

c)

leather shoelace

d)

wooden toothpick

61.

Electrical lights will not come on unless their electrical circuit is a

a)

parallel circuit

b)

series circuit

c)

closed circuit

d)

open circuit

62.
What happens when two north poles of a magnet are placed together?
a)
they repel
b)
they attract
c)
they cancel each other out
d)
the strength of the magnet is doubled
63.

why are these two magnets pushing away from each other?

a)

The poles are the same

b)

The poles are different

c)

They are glued

64.

Magnets can attract iron or steel. What does attract mean?

a)

Pull together

b)

Change colors

c)

Push apart

d)

Fall down

65.

Which have magnets in them?

a)

Computers and cellphones

b)

Wood and paper

c)

Trees and buttons

d)

Flowers and pencils

66.

Which object is magnetic?

a)

Iron nail

b)

Candle

c)

Plastic button

d)

Crayon

67.
Name this simple machine.
a)
Lever
b)
Wedge
c)
Pulley
d)
Inclined Plane
68.
Name this simple machine. 
a)
Pulley
b)
Wheel and Axle
c)
Inclined Plane
d)
Lever
69.

What simple machine is a round wheel attached to a post that works together to move something?

a)

lever

b)

pulley

c)

wheel & axle

70.

What is matter?

a)

Having more matter compared to other objects

b)

Pushing and pulling

c)

Anything that has weight and takes up space

d)

A force

71.
All simple machines help make work _________.
a)
harder
b)
smaller
c)
lighter
d)
easier
72.
Simple machines can change the amount of_______ needed to do work.
a)
gravity
b)
people
c)
force
d)
pulley
73.
Which is NOT a form of precipitation?
a)
hail
b)
wind
c)
rain
d)
snow
74.
Which weather term best describes a cloud that forms very close to the ground?
a)
fog
b)
sleet
c)
wind
d)
hail
75.
A snake living in the desert buries itself in the daytime. Burying itself in the sand helps the snake survive by...
a)
allowing the snake to move quickly
b)
helping the snake stay cool
c)
helping the snake blend with its environment
d)
keeping the snake from becoming ill
76.
Some species of birds are endangered species. These birds made their homes in certain forests, however there are few of these forests left. What is the most likely reason these species have become endangered? 
a)
spread of disease
b)
overhunting by humans
c)
loss of habitat
d)
increase in predators
77.
Which is not part of the water cycle?
a)
evaporation
b)
condensation
c)
runoff
d)
reflection
78.
Which earth material is used to make electrical wires for buildings?
a)
iron
b)
copper
c)
coal
d)
diamonds
79.
What causes objects, such as apples from an apple tree, to fall to the ground? 
a)
friction
b)
air resistance
c)
balanced forces
d)
gravity
80.
A student pours liquid into a graduated cylinder. What is the student trying to measure?
a)
weight
b)
mass
c)
volume
d)
temperature
81.
The least important time for people to have a source of clean, fresh water is when they are...
a)
exercising
b)
bathing
c)
cooking
d)
sleeping
82.
Herbivores eat...
a)
Meat
b)
Plants
c)
Meat and plants
d)
McDonald's Happy Meals
83.
Which material is transparent?
a)
black cotton cloth
b)
shiny tin foil
c)
white tissue paper
d)
clear plastic wrap
84.
There are ____ moon phases. 
a)
6
b)
7
c)
8
d)
9
85.
Opposite magnetic poles will
a)
Attract
b)
Repel
c)
Create friction
d)
Cause the moon phases to change
86.
A stick of butter is placed in a pot to make macaroni and cheese. The butter melts. What causes the butter to melt?
a)
heat
b)
gravity
c)
light
d)
friction
87.
If an electric circuit is left open, 
a)
Electricity will flow
b)
Electricity will not flow
c)
Electricity will flow and then stop
88.
Which earth material is best for building structures that must support heavy weight?
a)
iron
b)
wood
c)
copper
d)
plastic
89.
Which units should a student use to measure the length of a textbook?
a)
centimeters
b)
grams
c)
gallons
d)
ounces
90.
Why do moon phases change?
a)
Earth rotates around the moon. 
b)
Earth rotates around the sun. 
c)
The moon casts a shadow on Earth.
d)
The moon orbits around the Earth. 
91.
When light is refracted, it...
a)
Does not allow light to pass through
b)
Appears as if an object is "broken;" Light is scattered
c)
Absorbs one color and reflects the rest
92.
Magnetic poles that are alike will...
a)
attract
b)
repel
c)
generate electricity
93.
Glow sticks produce light for a short amount of time. The light from the glow stick is produced by...
a)
chemical energy
b)
heat energy
c)
magnetism
d)
gravity
94.

Living things need non-living things like food, water, air to survive on Earth. But the human activities have been largely responsible for increased pollution of all natural resources like water, air, weather etc. Can you mention a few types of pollution caused by human beings?

a)

Air pollution

b)

Water pollution

c)

Land pollution

d)

All of option 1, 2, 3

95.

A student takes a balloon and fills it with air. What he will notice?

a)

He will notice that mass of the balloon remains the same.

b)

He will notice that mass of the balloon is decreased.

c)

He will notice that mass of the balloon is decreased by half of the initial mass of the balloon.

d)

He will notice that the mass of the balloon is increased.

96.

Water helps to regulate body temperature.

a)

True

b)

False

97.

COVID-19 is an infectious disease caused by a newly discovered ____________.

a)

Virus

b)

Fungi

c)

Mushroom

d)

Bacteria

98.

Which is the largest organ in the human body.

a)

Lungs

b)

Skin

c)

Brain

d)

Kidneys

99.

How planets are there in our solar system?

a)

6

b)

7

c)

8

d)

4

100.

Eating a balanced diet and getting regular exercise are important for a healthy lifestyle. The following are the benefits we can gain:

a)

Prevent excessive weight gain

b)

Maintain mental health

c)

Improves sleep

d)

All the above

101.

People who have a habit of using correct posture are less likely to experience related back and neck pain. It also improves ______ flow in our body.

a)

Liquid

b)

Water

c)

Air

d)

Blood

102.

Why are plants important ?

a)

Plants absorb carbondioxide and give us oxygen

b)

It gives us food

c)

It helps in making our shelter

d)

All the above.

103.

This is the largest living animal on Earth.

a)

Elelphant

b)

Blue Whale

c)

Humans

d)

None of the above

104.

Bonding in diamond is

a)

covalent

b)

ionic

c)

dipole

d)

metallic

105.

Ionic Solids Have

a)

a low melting point

b)

a moderate melting point

c)

a high melting point

d)

none of these

106.

The bond between ice molecules is

a)

ionic

b)

covalent

c)

a hydrogen

d)

metallic

107.

Ionic bonds are mainly formed in

a)

inorganic compounds

b)

metals

c)

organic compounds

d)

none of these

108.

The bond between ice molecules is

a)

ionic

b)

covalent

c)

a hydrogen

d)

metallic

109.

How many basic crystal systems are possible ?

a)

Four

b)

Five

c)

Six

d)

Seven

110.

How many types of Bravis lattices are possible in crystals ?

a)

7

b)

14

c)

8

d)

5

111.

The number of lattice points in a primitive cell is

a)

4

b)

2

c)

8

d)

1

112.

The percentage of total volume occupied by the particles in a bbc structure is

a)

32

b)

68

c)

50

d)

74

113.

The fcc structure is often called

a)

cubic close packed

b)

hexagonal close packed

c)

the garaphite structure

d)

the diamond structure

114.
Which of the following elements has the smallest radius?
a)
Mg
b)
Al
c)
Si
d)
K
115.

Which element in Period 2 has the greatest atomic radius?

a)

Be

b)

C

c)

Na

d)

Li

116.

Of the halogens (group 7A), which has the smallest radius?

a)

F

b)

Br

c)

He

d)

At

117.
As you move across the periodic table from left to right, the atomic radius decreases.  This is because - 
a)
the number of protons increases, so attraction to electrons increases
b)
the number of energy levels increases
c)
the number of electrons increases
d)
the atomic mass increases
118.
Ionization energy is...
a)
the energy required to add an electron to a specific atom
b)
how much energy it takes to remove an electron from an atom
c)
the energy required to shield the outer electrons from the nucleus
d)
a measure of the ability of an atom to attract electrons
119.

Electronegativity __________ from left to right within a period and __________ from top to bottom within a group.

a)

decreases, increases

b)

increases, increases

c)

increases, decreases

d)

stays the same, increases

120.

The vertical (up and down) columns in the Periodic Table are called

a)

groups

b)

towers

c)

periods

d)

atomic numbers

121.

The atom with the largest atomic radius in Group 8A is -

a)

Ar

b)

He

c)

Kr

d)

Rn

122.
Francium (Fr) has the lowest ionization energy in Group 1 because - 
a)
it has the smallest number of valence electrons
b)
it has the greatest atomic mass
c)
it has the greatest number of protons, so it attracts its electrons the strongest
d)
its 1 valence electron is very far from the nucleus, so little energy is needed to remove it
123.
Which has the greater EN: 
H or F?
a)
H
b)
F
124.
Which has the greater EN: 
N or C?
a)
C
b)
N
125.

How many valence electrons does Carbon have?

a)

4

b)

5

c)

6

d)

8

126.
Atoms that have a high electronegativity, _______________.
a)
give up their electrons more easily.
b)
hold on to their electrons more tightly.
c)
have more electron shells.
127.
Which of the following sequences corresponds to a correct trend in ionization energy?
a)
Cl > S > P > Al
b)
Sr > Ca > Mg > Be
c)
Rb > K > Na > Li
d)
Rb > Sr > I > Xe
128.

The ability of an atom to attract electrons in a bond is called

a)

Ionization energy

b)

electronegativity

c)

atomic radius

d)

proton affinity

129.
As you move down a group, atomic radius increases because - 
a)
you add more and more neutrons
b)
you add more and more protons
c)
you add more and more shells (energy levels)
d)
you add more atomic mass
130.
The element with the smallest ionization energy in Period 6 is - 
a)
Rn
b)
Cs
c)
Os
d)
Tm
131.

Which of the following will have a lower ionization energy than Scandium (Sc)?

a)

Helium (He)

b)

Titanium (Ti)

c)

Calcium (Ca)

d)

Magnesium (Mg)

132.

Which of the following will have a higher electronegativity than arsenic (As)?

a)

Carbon (C)

b)

Neon (Ne)

c)

Antimony (Sb)

d)

Germanium (Ge)

133.

As you move left to right across a period, ionization energy

a)

increases

b)

decreases

c)

says the same

134.

นักวิทยาศาสตร์ท่านใดที่นำเสนอแบบจำลองอะตอมเป็นท่านแรก

a)

นีลส์ โบร์

b)

ดิโมคริตุส

c)

จอห์น ดอลตัน

d)

รัทเทอร์ฟอร์ด

135.

ข้อใดถูกต้องเกี่ยวกับแบบจำลองอะตอมของรัทเทอร์ฟอร์ด

a)

นิวเคลียสมีขนาดเล็กมากและมีมวลมากภายในประกอบ ด้วยอนุภาคโปรตอน

b)

อะตอมของธาตุประกอบด้วยอนุภาคโปรตอน

และอิเล็กตรอนกระจัดกระจายอยู่ภายในด้วยจำนวนเท่ากัน

c)

โปรตอนและอิเล็กตรอนรวมกันเป็นนิวเคลียสของอะตอม

d)

นิวเคลียสเป็นกลางทางไฟฟ้าเพราะประจุของโปรตอนกับของอิเล็กตรอนเท่ากัน

136.

จากการทดลองของรัทเทอร์ฟอร์ด รังสีแอลฟาที่มีวิถีการเคลื่อนที่เบนออกจากแนวเส้นตรงเกิดจากอะไร

a)

อนุภาคแอลฟาสะท้อนกลับหมด

b)

ประจุบวกของอนุภาคแอลฟาผลักกันเอง

c)

อนุภาคแอลฟาเคลื่อนที่เข้าใกล้นิวเคลียส

d)

อนุภาคแอลฟาเคลื่อนที่ชนอิเล็กตรอน

137.

ธาตุเทลลูเรียม (Te) มีเลขอะตอม 52 จะอยู่ในคาบและหมู่ที่เท่าไรของตารางธาตุ

a)

คาบ 6 หมู่ 5

b)

คาบ 5 หมู่ 6

c)

คาบ 7 หมู่ 5

d)

คาบ 5 หมู่ 7

138.

เลขอะตอมของธาตุ คือข้อใด

a)

จำนวนโปรตอนและอิเล็กตรอนในอะตอมของธาตุ

b)

จำนวนโปรตอนและนิวตรอนในอะตอมของธาตุ

c)

จำนวนอิเล็กตรอนในอะตอมของธาตุ

d)

จำนวนโปรตอนในอะตอมของธาตุ

139.

สมมติว่านักวิทยาศาสตร์สามารถสังเคราะห์ธาตุที่มี

เลขอะตอม 114 ได้ นักเรียนคิดว่าควรจะจัดให้ธาตุนี้อยู่ใน

หมู่ใด

a)

หมู่ที่ 4

b)

หมู่ที่ 6

c)

หมู่ที่ 5

d)

หมู่ที่ 7

140.

อิเล็กตรอนมีจำนวนมากที่สุดได้เท่าใดในระดับพลังงาน

ที่ 4

a)

8

b)

32

c)

18

d)

51

141.

ธาตุใดมีจำนวนเวเลนซ์อิเล็กตรอนน้อยที่สุด

a)

11Na

b)

9F

c)

13Al

d)

16S

142.

กำหนดให้ 36Kr มีการจัดเรียงอิเล็กตรอนเป็น 2, 8, 18, 8

ธาตุที่กำหนดให้อยู่ในหมู่ใด

a)

IVA

b)

VIIIA

c)

VIA

d)

IIA

143.

ธาตุโบรมีน (Br) มีเลขอะตอม 35 จะอยู่ในคาบและหมู่ที่เท่าไรของตารางธาตุ

a)

คาบ 2 หมู่ 5

b)

คาบ 4 หมู่ 7

c)

คาบ 3 หมู่ 3

d)

คาบ 6 หมู่ 7

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