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YEAR 5 B.S.T REVISION (2ND TERM)

Total questions: 146

Worksheet time: 3hrs 58mins

Name
Class
Date
1.

What is an irreversible change?

a)

Something you can change back.

b)

Something you cannot change back.

2.

What is a reversible change?

a)

Something you can change back.

b)

Something you cannot change back.

3.

Which of these is NOT a reversible change?

a)
b)
c)
d)
4.

Cooking an egg is a..

a)

Irreversible

b)

Reversible

5.

Melting chocolate is a....

a)

Irreversible

b)

Reversible

6.

The change happening in the picture is...

a)

Irreversible

b)

Reversible

7.

burning wood is ........... change

a)

Reversible

b)

Irreversible

8.

When orange juice is frozen to make popsicles, can the popsicles change back to orange juice?

a)

Yes

b)

No

9.

Choose the TWO reversible changes:

a)
b)
c)
d)
10.

i like ......

a)
b)
c)
d)
11.

cutting paper is

a)

Reversible change

b)

irreversible change

12.
a)

Reversible change

b)

irreversible change

13.
a)

irreversible change

b)

reversible change

14.
a)

irreversible change

b)

reversible change

15.
a)

reversible change

b)

irreversible change

16.

Chemical changes...

a)

Always form a new substance.

b)

May change shape or size.

c)

May absorb or release heat.

d)

May change colour, produce odor, create sound, release gas or produce light.

e)

Can often be undone.

17.

Physical Changes...

a)

Do not form a new substance.

b)

May change shape or size.

c)

May absorb or release heat.

d)

May change state of matter.

e)

Can often be undone.

18.

Leaves in autumn undergo a chemical change.

a)

TRUE

b)

FALSE

19.

Fireworks exploding in the sky undergo a physical change.

a)

TRUE

b)

FALSE

20.

Choose the answers that respond to a physical change.

a)

Burning wood.

b)

Chopping wood.

c)

Melting ice.

d)

Rotten bananas.

21.

Choose the answers that respond to a chemical change.

a)

Fireworks.

b)

Cutting fabric to make a dress.

c)

Making a cake.

d)

Chopping onions.

22.

Mixing and dissolving are examples of reversible change.

a)

TRUE

b)

FALSE

23.

Rusting is an irreversible change.

a)

TRUE

b)

FALSE

24.

Tick the three main things you need to start a fire.

a)

An extinguisher.

b)

A fuel.

c)

Oxygen.

d)

Ignition.

25.

When talking about fire extinguishers, the acronym PASS means...

a)

Pass - Aim - Sweep - See

b)

Push - Aid - Spray - See

c)

Pull - Aim - Spray - Sweep

26.

True or false: Dissolving is a reversible change. The solid (solute) and liquid (solvent) can be separated.

a)

TRUE

b)

FALSE

27.

Which of these are irreversible changes?

a)

Salt dissolved in water.

b)

Plaster of Paris dissolved in water.

c)

Wood that has been burnt.

d)

An egg that has been boiled.

28.

Which of these changes are reversible?

a)

Sand mixed in water.

b)

Rice mixed in sand.

c)

potato that has been baked.

d)

An effervescent tablet (e.g. Alka-Seltzer®) dissolved in water.

29.

Which description best describes what happens when a material is burnt?

a)

The process is reversible.

b)

The process is irreversible: the original material is destroyed to

produce new

c)

The material being burnt disappears.

d)

The material being burnt always turns completely into a

gas.

30.
Which of these is NOT a reversible change?
a)
Water to Ice
b)
Juice to Popsicle
c)
Cookie Dough to Cookie
d)
Melting Chocolate
31.
Which is not a property of matter?
a)
solid
b)
liquid
c)
gas
d)
ice
32.
A popsicle is a.....
a)
gas
b)
liquid
c)
solid
33.

Which of these are examples of how materials can change? (Select all that apply)

a)

State

b)

Colour

c)

Shape

d)

Bubble

e)

Name

34.

When ice melts, this is an example of a material changing...

a)

State

b)

Colour

c)

Shape

d)

Bubble

35.

Which of the following is an example of material changing shape?

a)

Mixing salt in water

b)

Snapping a stick

c)

Mixing vinegar and baking powder

d)

Bleaching material

36.

We can mix salt or sugar in water. This is an example of which type of change?

a)

State

b)

Colour

c)

Shape

d)

Bubble

e)

Dissolve

37.

When a material can change states and then change back again we say that is process is....

a)

Irreversible

b)

Reversible

c)

Changing

d)

Permanent

38.

When a material changes states and then can't change back again we say that this process is....

a)

Irreversible

b)

Reversible

c)

Changing

d)

Temporary

39.

When we snap a stick it is an example of a change in shape. This change is ...

a)

Reversible

b)

Irreversible

c)

An accident

d)

Fixable

40.

When applying bleach to fabric the change is an example of a change in state.

a)

True

b)

False

41.

What is a force?

a)

something Darth Vadar has

b)

a push or a pull

c)

something you can see

42.

Force is measured in...

a)

lbs

b)

m/s2

c)

grams

d)

newtons

43.

To calculate forces that are in the same direction you..

a)

subtract them

b)

add them

c)

multiply them

d)

divide them

44.

To calculate forces that are in opposite directions you...

a)

add them

b)

subtract them

c)

multiply them

d)

divide them

45.

The unbalanced force that opposes motion is known as...

a)

friction

b)

force

c)

push or pull

d)

the tires on a car

46.

Forces that are considered to be in motion are called...

a)

friction

b)

unbalanced forces

c)

balanced forces

47.

If two cars move toward each other at the same speed which car will have more force?

a)

A larger car because of its mass

b)

A smaller car because of its mass

c)

A larger car because of its speed

d)

A smaller car because of its speed

48.

Does mass or speed have a larger impact on moving objects?

a)

Mass

b)

Speed

49.

An object in motion/rest stays in motion/ rest.... is what law?

a)

Newton's 1st Law

b)

Newton's 2nd Law

c)

Newton's 3rd Law

50.

The force of an object depends on mass and acceleration.... is what law?

a)

Newton's 1st Law

b)

Newton's 2nd Law

c)

Newton's 3rd Law

51.

For every action there is an equal and opposite reaction is stated by what law?

a)

Newton's 1st Law

b)

Newton's 2nd Law

c)

Newton's 3rd Law

52.

"Forces acting in pairs" is what law?

a)

Newton's 1st Law

b)

Newton's 2nd Law

c)

Newton's 3rd Law

53.

What 2 factors determine the amount of force an object receives?

a)

speed & height

b)

size & distance

c)

mass & speed

54.

If a car is moving fast toward a wall, the wall will....

a)

apply an equal and opposite force back on the car?

b)

allow the car to run through the wall

c)

open up and swallow the car

d)

do nothing

55.

What is the equation for force?

a)

E=mc2

b)

F=ma

c)

Q=mv3

56.

Why does a person continue to fly forward in a car after a crash?

a)

the person is not moving until the car stops

b)

the person jumps out of the car

c)

the person has more force than the wall

d)

the person is still in motion

57.

Inertia is...

a)

an objects ability to change direction

b)

an objects ability to move

c)

forces depend on the mass and weight of the object

d)

an objects tendency to resist change in motion

58.

The location of an object in relation to a nearby object or place is called . . .

a)

reference point

b)

motion

c)

position

d)

frame of reference

59.

A change in position is called . . .

a)

position

b)

frame of reference

c)

reference point

d)

motion

60.

You know something is moving if its position changes against a background, which is called . . .

a)

position

b)

motion

c)

frame of reference

d)

reference point

61.

Tells you how the position of an object changes during a certain amount of time

a)

speed

b)

velocity

c)

acceleration

d)

force

62.

You can measure time in . . .

a)

hours (hr)

b)

minutes (min)

c)

seconds (sec)

d)

all of the above

63.

The speed of an object in a particular direction is called . . .

a)

speed

b)

velocity

c)

acceleration

d)

force

64.

Any change in velocity (speed and/or direction) of motion . . .

a)

speed

b)

velocity

c)

acceleration

d)

force

65.

A push or pull on matter from all directions is called . . .

a)

speed

b)

velocity

c)

acceleration

d)

force

66.

Forces that cause a change in motion are . . .

a)

gravity

b)

friction

c)

balanced forces

d)

unbalanced forces

67.

Forces on an object that are equal in size & opposite direction, cancelling each other out, are called . . .

a)

unbalanced forces

b)

balanced force

c)

friction

d)

gravity

68.

A force that opposes motion; can act between two objects that are touching, or between air & a moving object . . .

a)

gravity

b)

friction

c)

balanced forces

d)

unbalanced forces

69.

The force of attraction between two objects; increases as the mass of the objects increase; decreases as the distance between the objects increases . . .

a)

gravity

b)

friction

c)

balanced forces

d)

unbalanced forces

70.
A flat sloping surface that connects lower and higher elevations. It makes raising objects easier.  
a)
wedge
b)
screw
c)
lever
d)
inclined plane 
71.
An inclined plane wrapped around a rod forms this simple machine 
a)
lever
b)
pulley
c)
screw
d)
wedge 
72.
A simple machine that consists a rigid bar that pivot about a fixed point
a)
lever
b)
pulley
c)
wheel and axle
d)
fulcrum 
73.
An axe is an example of a
a)
pulley
b)
inclined plane
c)
screw
d)
wedge 
74.
A seesaw is an example of a  
a)
wedge
b)
lever 
c)
inclined plane 
d)
pulley 
75.
A device that has two or more simple machines working together 
a)
fulcrum 
b)
pulley
c)
compound (complex) machine 
d)
motor 
76.
Stairs
a)
wedge
b)
pulley
c)
inclined plane
d)
wheel and axle
77.
Lightbulb
a)
wedge
b)
pulley
c)
incline plane
d)
screw
78.
Which is not a type of simple machine?
a)
spring
b)
screw
c)
pulley
d)
wedge
79.
What type of simple machine is found on the cap of a pickle jar?
a)
lever
b)
inclined plane
c)
pulley
d)
screw
80.
This device
a)
wedge
b)
lever
c)
incline plane
d)
wheel and axle
81.
What type of simple machine is this?
a)
wheel and axle
b)
gear
c)
lever
d)
inclined plane
82.
The fixed point on the lever is called 
a)
load
b)
resistance
c)
bar
d)
fulcrum
83.
The transfer of energy that occurs when a force makes an object move is known as 
a)
effort
b)
potential 
c)
kinetic 
d)
work 
84.
What do you call a machine made up of two or more simple machines?
a)
complicated machine
b)
compound or complex machine
c)
comprehensive machine
d)
constructive machine
85.
The device used to raise a flag up a flag pole is an example of a 
a)
wheel and axle 
b)
lever
c)
inclined plane 
d)
pulley 
86.
Which of the following does a simple machine do?
a)
allows the users to apply less force over a longer distance
b)
reduce the amount of force needed to do work
c)
change the direction of the applied force
d)
all of the above
87.
Identify this simple machine
a)
Lever
b)
Wheel & Axle
c)
Inclined Plane
d)
Screw
88.
Two examples of a pulley...
a)
knife & axe blade
b)
lightbulb & screw
c)
flagpole hoist & window blinds
d)
catapult & teeter totter
89.
Which is an example of someone using a simple machine to do work?
a)
a boy runs across a football field
b)
a banker counts money
c)
a mother pushes a stroller up a ramp
d)
a girl eats a sandwich
90.
Identify this simple machine
a)
Lever
b)
Wheel & Axle
c)
Inclined Plane
d)
Screw
91.
Two examples of a pulley...
a)
knife & axe blade
b)
lightbulb & screw
c)
flagpole hoist & window blinds
d)
catapult & teeter totter
92.
Which of the following does a simple machine do?
a)
allows the users to apply less force over a longer distance
b)
reduce the amount of force needed to do work
c)
change the direction of the applied force
d)
all of the above
93.
Which is an example of someone using a simple machine to do work?
a)
a boy runs across a football field
b)
a banker counts money
c)
a mother pushes a stroller up a ramp
d)
a girl eats a sandwich
94.
The device used to raise a flag up a flag pole is an example of a 
a)
wheel and axle 
b)
lever
c)
inclined plane 
d)
pulley 
95.
An inclined plane wrapped around a rod forms this simple machine 
a)
lever
b)
pulley
c)
screw
d)
wedge 
96.
A simple machine that consists a rigid bar that pivot about a fixed point
a)
lever
b)
pulley
c)
wheel and axle
d)
fulcrum 
97.
A seesaw is an example of a  
a)
wedge
b)
lever 
c)
inclined plane 
d)
pulley 
98.
Stairs
a)
wedge
b)
pulley
c)
inclined plane
d)
wheel and axle
99.
This device
a)
wedge
b)
lever
c)
incline plane
d)
wheel and axle
100.
The fixed point on the lever is called 
a)
load
b)
resistance
c)
bar
d)
fulcrum
101.
Name this simple machine. 
a)
Pulley
b)
Wheel and Axle
c)
Inclined Plane
d)
Lever
102.
Name this simple machine. 
a)
Wheel and Axle
b)
Lever
c)
Pulley
d)
Wedge
103.
What is effort (input) force?
a)
the force required by a machine in order to accomplish work (the force you put on the machine)
b)
the force which an effort force must overcome in order to do work on an object via a simple machine.
c)
the force the machine exerts on a object
d)
the output work times the input distance
104.
What is resistance (output) force?
a)
the force required by a machine in order to accomplish work (the force you put on the machine)
b)
the force which an effort force must overcome in order to do work on an object via a simple machine.
c)
the force the machine exerts on a object
d)
the output work times the input distance
105.
Using a lever, Joe is able to lift a 10,000 N car off of the ground with a force of 1000 N. What is the mechanical advantage of the lever?
a)
1
b)
10
c)
100
d)
1000
106.
The mechanical advantage of this inclined plane is.....
a)
2.4
b)
3.4
c)
4.4
107.

The earth is tilted on its _____

a)

line

b)

equator

c)

axis

d)

core

108.
The earth rotates every
a)
24 hours
b)
15 hours
c)
365 days
d)
hour
109.
The Earth's axis is tilted _____ degrees.
a)
23.5
b)
25.3
c)
30.2
d)
24
110.

What is Earth's daily motion on its axis called?

a)

Rotation

b)

Revolution

111.
One rotation of Earth is equal to
a)
a day.
b)
a year.
c)
a month. 
112.
If Earth rotated slower, we would have...
a)
shorter days.
b)
longer days.
c)
shorter years.
d)
longer years.
113.
Where on Earth can you experience entire days of darkness?
a)
The equator
b)
The poles
c)
The Tropic of Cancer
d)
The Tropic of Capricorn
114.
The right side of this illustration represents...
a)
...night.
b)
...winter.
c)
...summer.
d)
...fall.
115.
You are getting ready for school.  On the other side of the world, students are getting ready for _______.
a)
school
b)
bed
c)
breakfast
d)
lunch
116.

Which of the following would be the best example to explain Earth's rotation?

a)

funnel

b)

merry-go round

c)

doorknob

d)

swing

117.

Many cultures have different methods to determine the time of day. Which of the following is an ancient tool invented to determine the time of day?

a)

watch

b)

clock

c)

sundial

d)

compass

118.

What direction does the sun appear to move across the sky?

a)

west to east

b)

north to south

c)

east to west

d)

south to north

119.

which statement correctly describes the sun's apparent movement across the sky?

a)

as earth spins on its axis, it makes the sun appear to move across the sky?

b)

as the sun spins around earth, it moves across the sky

c)

earth rotates 24 hrs, making the sun appear move across the sky.

d)

the sun rotates around the earth every 12 hours, making the sun appear to move across the sky

120.

Earth revolves around the sun, but it also makes one complete rotation. How long does it take Earth to make one complete rotation on its axis?

a)

365 days

b)

1 month

c)

1 day

d)

1 week

121.
What is at the center of the Solar System?
a)
Earth
b)
Moon
c)
Sun
d)
Jupiter
122.
How many planets orbit the Sun?
a)
1
b)
4
c)
8
d)
10
123.
The sun is a glowing ball of _______.
a)
water
b)
liquid
c)
gases
d)
rocks
124.
What is the sun mostly made up of
a)
Helium
b)
Core
c)
Carbon
d)
Hydrogen
125.
What is the sun made from?
a)
Heat
b)
Hydrogen and Helium gas
c)
Nitrogen gas
d)
Fire and heat
126.
Whats the 5th planet in our solar system
a)
pluto
b)
earth
c)
mars
d)
jupiter
127.

The imaginary line that runs through Earth from north to south is called its

a)

axis

b)

pole

128.

The surface of the earth is

a)

curved

b)

flat

129.

It take the earth _________ to complete one rotation.

a)

a day

b)

a month

130.

The earth movement around the sun is called:

a)

revolution

b)

rotation

131.

The earth needs _______ to complete one full revolution around the sun.

a)

a day

b)

365 days

132.

The path that the earth takes to revolve around the sun is known as:

a)

pole

b)

orbit

133.

The earth rotation results in producing:

a)

seasons

b)

day and night

134.

The earth direction of rotation is

a)

counter wise

b)

counter clockwise

135.

The revolution of earth around the sun produces:

a)

seasons

b)

day and night

136.

Sunlight beam carries:

a)

energy

b)

particles

137.

The sun

a)

spins around imaginary axis

b)

revolve around earth

c)

revolve around the solar system

d)

non of the above

138.

The earth is the __________ planet in the solar system

a)

first

b)

second

c)

third

d)

forth

139.

Planets in the solar system experience day and night?

a)

True

b)

False

140.

As the distance between planet and the sun increases the year length

a)

increases

b)

decreases

c)

all planets have the same year length

d)

non of the above

141.

Planets that are close to the sun will have_______ day than the planets away from the sun

a)

longer

b)

shorter

c)

all planets have the same day length

d)

the distance between sun and planet doesn't affect the day length

142.

Stars in the sky moves with the earth movement

a)

true

b)

false

143.

The earth poles will get __________ amount of light (energy) from the sun than the equator

a)

more

b)

less

c)

same

d)

non of the above

144.

The axis of the earth is tilted

a)

23.5 degree

b)

24 degree

c)

27 degree

d)

the axis is not tilted

145.

as you move toward the poles the earth surface become _______ tilted/curved.

a)

less

b)

more

146.

The area that receives the largest amount on earth surface is at

a)

poles

b)

equator

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