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Science 6 Review

Total questions: 125

Worksheet time: 1hrs 10mins

Name
Class
Date
1.
WHAT ARE THE 3R'S OF RECYCLING?
a)
Redirct, Rude, Round.
b)
Respectful, Responsible, Right.
c)
Reduce, Reuse, Recycle. 
d)
Rewrite, rewind, respond.
2.
Why is it important to recycle?
a)
It saves landfill space
b)
It saves natural resources
c)
It saves money
d)
All of the above statements are true 
3.

Which one is the picture that shows a water pollution effect?

a)
b)
c)
d)
4.

The animal above become endangered nowadays. The main reason they become endangered is __________

a)

Pandemic disease

b)

Loss of habitat

c)

Pollution

d)

Erosion

5.

Why is it important to care for the environment?

a)

To ensure resources are around for future generations

b)

To ensure water becomes polluted

c)

To ensure plants and animals have difficulty surviving

d)

To use up all of the resources

6.

How can humans help to reduce pollution?

a)

Throw their trash away anywhere

b)

Recycle if possible

c)

Work in factories that produce alot of smoke

d)

Empty their drinks into the river or ocean

7.

What is an effect of pollution?

a)

Preserves natural resources for the future

b)

Makes it easier to breathe

c)

Makes humans, animals and plants sick or die

d)

Makes the sun move closer to the earth

8.

Read the article and choose the best title

a)

Favourite toys

b)

Treasured possessions

c)

My room

9.

habitat

a)

home

b)

colour

c)

routine

10.

a)

environmental preservation

b)

water conservation

c)

pristine beach

11.

a)

preservation

b)

deforestation

c)

watering

12.

Which of the following situations DOES NOT show way of protecting and

conserving estuaries and intertidal zones?

a)

Angelo recycles old things.

b)

Melay limits the use of plastic products.

c)

Nico uses synthetic fertilizer for his crops.

d)

Angela dumps his wastes in a proper container.

13.

Which of the following activities is the MOST environment-friendly?

a)

Building dams along the river

b)

Dumping chemicals into bodies of water

c)

Commercially developing coastal watersheds

d)

Restoring coastal watersheds from damages

14.

Why is there a need to protect the estuaries and intertidal zones?

a)

It is our property.

b)

It helps us come up with lessons to discuss in class.

c)

It provides vital nesting, breeding, and feeding habitats for many species.

d)

It is God’s gift to us, thus we can do anything to it for our own benefits.

15.

Mariss and her friends went to the beach. They brought food for them to eat. After swimming and eating, most of her friends left their wastes scattered on the beach. As a friend who values protection of environment, what would you tell them?

a)

“It’s okay to throw garbage on the beach.”

b)

“Do not bring any food when going to the beach again.”

c)

“I’ll tolerate what you have done today but never do it again.”

d)

“Do not leave your wastes on the beach because it can cause pollution.”

16.

What is a flowering plant?

a)

A plant that produces spores

b)

A plant that produces cones

c)

A plant the produces flowers and fruits.

17.

The ferns reproduce by ________

a)

Spores

b)

Seeds

18.

This is an example of _________

a)

Ferns

b)

Mosses

19.

How many groups can plants be divided into?

a)

4

b)

2

c)

3

d)

7

20.

An example of non-flowering plants is __________

a)

Pine tree

b)

Rose

c)

Jasmine

d)

Durian tree

21.

Seedless vascular plants reproduce by...

a)

Seeds

b)

Spores

c)

Pollen

d)

Rhyzoid

22.

A flowering plant which forms seeds for reproduction

a)

angiosperm

b)

gymnosperm

c)

bryohpyte

d)

conifer

23.

A seed plant that bears its seeds directly on the surfaces of cones

a)

angiosperm

b)

gymnosperm

c)

bryophyte

d)

rhizoid

24.

__________________________ is the process of transporting the male gamete from the male flower parts to the female flower parts.

a)

Asexual reproduction

b)

Pollination

c)

Photosynthesis

d)

Vasculation

25.

Plants that do not have a well-developed system of tubes for transporting water and other materials

a)

nonvascular plants

b)

vascular plants

c)

chloroplasts

d)

conifers

26.

Conifer plants grow _________instead of flowers

a)

trees

b)

seeds

c)

cones

27.

Leaves of ferns are known as _________ and start as fiddleheads.

a)

fronds

b)

rhizomes

c)

rhizoids

28.

Some ferns are good to eat especially when they are fiddleheads.

a)

True

b)

False

29.

These are tiny plants with no true roots, stems and flowers.

a)

ferns

b)

mosses

c)

trees

30.

Mosses are important because they ______ soil so that it does not wash away.

a)

hold

b)

absorb

c)

destroy

31.

Describe the type of interaction between the organisms in the picture.

a)

Predation

b)

Competition

c)

Commensalism

d)

Parasitism

32.

Describe the type of interaction between the organisms in the picture.

a)

predation

b)

parasitism

c)

competition

d)

mutualism

33.

Describe the type of interaction between the organisms in the picture.

a)

mutualism

b)

parasitism

c)

commensalism

d)

competition

34.

Describe the type of interaction between the organisms in the picture.

a)

parasitism

b)

commensalism

c)

predation

d)

competition

35.

Describe the type of interaction between the organisms in the picture.

a)

competition

b)

parasitism

c)

predation

d)

commensalism

36.

Describe the type of interaction between the organisms in the picture.

a)

mutualism

b)

predation

c)

commensalism

d)

parasitism

37.

Describe the type of interaction between the organisms in the picture.

a)

predation

b)

parasitism

c)

competition

d)

commensalism

38.

Describe the type of interaction between the organisms in the picture.

a)

mutualism

b)

commensalism

c)

predation

d)

competition

39.

Describe the type of interaction between the organisms in the picture.

a)

parasitism

b)

predation

c)

commensalism

d)

mutualism

40.

Describe the type of interaction between the organisms in the picture.

a)

commensalism

b)

predation

c)

mutualism

d)

competition

41.

A relationship in which one organism benefits and the other is unaffected.

a)

mutualism

b)

competition

c)

parasitism

d)

commensalism

42.

A relationship in which two organism benefit from the action of each other.

a)

parasitism

b)

mutualism

c)

commensalism

d)

competition

43.

An animal that hunts other animals for food

a)

omnivore

b)

consumer

c)

predator

d)

prey

44.

An animal that is hunted and eaten by another animal

a)

producer

b)

consumer

c)

predator

d)

prey

45.

Describe the type of interaction between the organisms in the picture.

a)

Predation

b)

Competition

c)

Commensalism

d)

Parasitism

46.

Describe the type of interaction between the organisms in the picture.

a)

predation

b)

parasitism

c)

competition

d)

mutualism

47.

Describe the type of interaction between the organisms in the picture.

a)

mutualism

b)

parasitism

c)

commensalism

d)

competition

48.

Describe the type of interaction between the organisms in the picture.

a)

parasitism

b)

commensalism

c)

predation

d)

competition

49.

Describe the type of interaction between the organisms in the picture.

a)

mutualism

b)

predation

c)

commensalism

d)

parasitism

50.

Describe the type of interaction between the organisms in the picture.

a)

commensalism

b)

predation

c)

mutualism

d)

competition

51.

The force that acts in the opposite direction of motion when two surfaces come in contact.

a)

force

b)

friction

c)

static

d)

kinetic

52.

Friction is a force that acts in an ____________direction of movement.

a)

similar

b)

opposite

c)

parallel

d)

west

53.

How does friction affect speed?

a)

More friction decreases speed

b)

More friction increases speed

c)

Less friction decreases speed

d)

None of these

54.

What does friction produce?

a)

Light

b)

Sound

c)

Heat

d)

Gravity

55.

Which of these materials do you predict would have the MOST amount of friction?

a)

Metal

b)

Tile

c)

Sand paper

d)

Denim

56.

Which of these is an example of undesirable effects of friction?

a)

Keeping our balance

b)

Forest fire

c)

Running on the street

d)

Writing on notebook

57.

Rougher surfaces have ___________.

a)

greater friction

b)

less friction

c)

the same level of friction

d)

All these are correct

58.

Which of the following is an example of friction that is helpful?

a)

Brakes used on a bike

b)

Tires from a car on the road

c)

Tread on the bottom of your shoes

d)

All examples are helpful

59.

How can friction be reduced?

a)

Reduce the force acting between the two surfaces

b)

Reduce the roughness of the two surfaces coming in contact

c)

Use wax, grease or oil

d)

All of the above are ways of reducing friction

60.

You use ___________ friction when you leave marks on paper with a pencil “lead”.

a)

Static friction

b)

Sliding friction

c)

Rolling friction

d)

A. None of these

61.
What is a PUSH or PULL of an object?
a)
Motion
b)
Force
c)
Friction
d)
Gravity
62.
Why is it harder for the boy in Image B to get down the hill?
a)
Motion
b)
Friction
c)
Work
d)
Displacement
63.
If these boys 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.
64.
It takes more force to accelerate the iron man on the left than the iron man on the right because the iron man on the left has more mass. This best describes
a)
Newton's first law, the law of inertia
b)
Newton's second law, the law of acceleration
c)
Newton's third law, the law of action reaction 
d)
The law of universal gravitation
65.
The formula 
? = mass x acceleration
or 
? = m x a 
is used to find 
a)
Force
b)
Velocity
c)
Momentum
d)
Gravity
66.
For every action, there is an equal and opposite reaction.
a)
Newton's
1st
Law of Motion
b)
Newton's
2nd
Law of Motion
c)
Newton's
3rd
Law of Motion
67.
a)
1st
b)
2nd
c)
3rd
68.
a)
1st
b)
2nd
c)
3rd
69.
What is the attractive force that exists between all objects that have mass?
a)
Weight
b)
Mass 
c)
Gravity
d)
Viscosity
70.
If an object is stationary (not moving) the forces acting upon it are _____________
a)
unbalanced
b)
weak
c)
balanced
d)
Hulk Smash!
71.

A squirrel sits on the ground and eats a donut. We know the forces on him must be balanced because...

a)

Forces are always balanced

b)

the squirrel is not accelerating

c)

squirrels are projectiles

d)

he's eating a donut

72.
Are forces balanced or unbalanced when a marble speeds up rolling down a ramp?
a)
Balanced
b)
Unbalanced
73.
What is Newton's First Law known as? The Law of
a)
Friction
b)
Mass
c)
Inertia
d)
Gravity
74.
What is Newton's First Law
a)
F=ma
b)
Every action has an equal and opposite reaction
c)
An object at rest stays at rest, an object in motion stays in motion. 
d)
Friction 
75.
Newton's third law states that any action will have a(n) _______ and ______ reaction
a)
Equal and similar
b)
Equal and opposite
c)
Equal and different
d)
Greater and opposite
76.
What is a projectile?
a)
any object that is thrown
b)
an object that has multiple forces acting upon it
c)
an object that has one force of gravity acting upon it
d)
none of the above
77.
An example of projectile motion is...
a)
a golf ball being hit
b)
a rocket
c)
a water fountain
d)
all of the above
78.
The projectile will drop below the straight line of projection because...
a)
the force of gravity acting upon it
b)
it looses speed
c)
it no longer accelerates
d)
all of the above
79.
The definition of range is...

a)
the horizontal distance traveled of a projectile
b)
how fast a projectile is moving
c)
the amount of time a projectile is in air
d)
none of the above
80.
Will gravity affect the cannonball's horizontal motion?
a)
Yes
b)
No
81.
Projectiles move in which two directions?
a)
up and down
b)
left and right
c)
horizontal and vertical
d)
east and west
82.
The shape of the path a projectile follows...
a)
circular
b)
linear
c)
wavy
d)
parabolic
83.
Horizontal and vertical motions are ______ of each other
a)
dependent
b)
independent
84.
A projectile will accelerate downward because gravity is acting on it.
a)
vertical motion
b)
horizontal motion
c)
circular motion
d)
linear motion
85.
What is the only thing that determines how long a horizontally launched projectile stays in the air?
a)
the weight of the object
b)
the height of the object
c)
the height at which it was launched
d)
the distance of the projectile
86.

moving or tending to move toward a center...

a)

centripetal force

b)

centrifugal force

c)

Tangent

d)

Curvature

87.
Where is the net force when the rollercoaster is at the top of the loop?
a)
Towards the sky
b)
Towards the Right
c)
Towards the left
d)
Towards the ground
88.
A particle P is moving in a circle with uniform speed. Which one of the following diagrams correctly shows the direction of the acceleration a and velocity v of the particle at one instant of time?
a)
A
b)
B
c)
C
d)
D
89.
Which statement is true about an object that is traveling in uniform circular motion?
a)
The speed of the object varies.
b)
The net force on the object is directed toward the center of the circular path.
c)
The direction of the object's velocity is constant.
d)
The net force on the object is directed away from the center of the circular path.
90.
Centripetal acceleration always points
a)
in the direction of the object's motion
b)
in the opposite direction of the object's motion
c)
towards the center of the circle
d)
towards the outside of the circle
91.

A lamp that plugs into a wall socket draws energy, which flows through a thin wire in the bulb, causing it to heat up until it glows. What energy transformations are taking place?

a)

Chemical → light → electrical

b)

Mechanical → sound → light

c)

Thermal → solar → electrical

d)

Electrical → thermal → light

92.

An electric pencil sharpener uses electricity to make its motor spin. The pencil sharpener also makes noise and heats up. Which observation of the pencil sharpener demonstrates the law of conservation of energy?

a)

The amount of electrical energy used equals the total amount of mechanical, sound, and thermal energy produced.

b)

The amount of energy used by the electric pencil sharpener is greater than an electric lamp.

c)

The electric pencil sharpener only uses energy when it is being used to sharpen a pencil.

d)

The electric pencil sharpener is easier to use than the older version that was cranked by hand.

93.

Turning the handle makes a current that causes the light bulb to glow. What are the energy transformations that happen in this hand generator?

a)

Thermal → solar → light

b)

Mechanical → electrical → light

c)

Electrical → mechanical → light

d)

Solar → light → electrical

94.

When energy enters a system and then comes out of the system later, the law of conservation of energy states that–

a)

some of the energy that entered the system will remain in the system.

b)

the energy will always create a change in the properties of the parts of the system.

c)

the form of energy that comes out of the system must be the same form that entered.

d)

the amount of energy coming out of the system must equal the energy that entered the system.

95.

In which of the following scenarios would this energy transformation be observed?

chemical → light → heat

a)

Plucking a guitar string

b)

Lighting a match

c)

Turning on a fan

d)

Starting a car

96.

Which of the following is a form of potential energy?

a)

sound energy

b)

chemical energy

c)

mechanical energy

d)

thermal (heat) energy

97.

The law of conservation of energy states ___.

a)

electrical energy can be transformed into other forms

b)

energy can be created and destroyed

c)

energy is never created nor destroyed

d)

what goes up must come down

98.

There are ___ forms of kinetic energy.

a)

3

b)

5

c)

4

d)

2

99.

There are ___ forms of potential energy.

a)

3

b)

5

c)

4

d)

2

100.

During energy transformations, energy is never ___.

a)

released as heat

b)

used to increase an object's potential energy

c)

created or destroyed

d)

completely transformed

101.

A baseball is hit into the air with a bat. When does baseball have the greatest gravitational potential energy?

a)

when it hits the ground

b)

when it reaches its highest point

c)

when it leaves the bat

d)

when the mechanical and kinetic energies of the baseball are equal

102.

___ is energy stored by things that stretch or compress.

a)

Gravitational potential

b)

Elastic kinetic energy

c)

Chemical kinetic energy

d)

Elastic potential energy

103.

Calculate the gravitational potential energy of the object.

GPE = mgh

mass: 50

gravity: 10

height: 6

a)

5320J

b)

300J

c)

66J

d)

3000J

104.

Calculate the kinetic energy.

KE=12mv2KE=\frac{1}{2}mv^2  

mass: 200

velocity: 5

a)

2,500J

b)

250J

c)

500,000J

d)

none of the above

105.

What type of energy is stored in a battery?

a)

electrical

b)

thermal

c)

radiant

d)

chemical

106.

Which energy transformation occurs in a toaster?

a)

electrical → thermal

b)

chemical → thermal

c)

nuclear → electrical

d)

thermal → electrical

107.

A battery converts what type of energy to another?

a)

electrical → thermal

b)

chemical → electrical

c)

kinetic → nuclear

d)

light → heat

108.

Energy transformations occur when ___.

a)

a chemical reaction takes place

b)

energy changes from one form to another

c)

energy is created through conduction

d)

two forces slide together that are touching

109.

Which items would have this energy transformation: chemical → mechanical

a)

a candle burning

b)

eating a big breakfast before a race

c)

a ball bouncing

d)

using a hairdryer

110.

Which of the following is not a source of stored chemical energy that can be turned into a form of kinetic energy?

a)

a battery in a toy car

b)

food

c)

the nucleus of an atom

d)

fossil fuels

111.

What is a inclined plane..?

a)

A thing wrapped around a inclined plane

b)

Any flat sloping surface

c)

A simple machine used to pull things

d)

A complex machine that slopes

112.

What is a screw...?

a)

A sloped surface

b)

A bicycle

c)

A inclined plane wrapped around a cylinder or a cone

d)

A simple machine made up of one or two inclined planes

113.

Which one is the correct example of a pulley...?

a)
b)
c)
d)
114.

What is a wedge...?

a)

A simple machine made up of one or two inclined planes

b)

An axe

c)

A inclined plane wrapped around a cone

d)

None of the above

115.

How many types of simple machines are there...?

a)

2

b)

9

c)

6

d)

7

116.

When does work occur...?

a)

While sitting/standing motionless

b)

When a force causes an object to move in the direction of the applied force

c)

When a force causes an object to move in the opposite direction of the applied force

d)

All of the above

117.

What is a machine...?

a)

an apparatus using or applying mechanical power and having several parts, each with a definite function and together performing a particular task.

b)

Something that reduces the amount of force while pushing an object

c)

A machine is any device that changes the amount of force applied to an object

d)

All of the above

118.

What is a lever...?

a)

A wheel that has a groove along its edge

b)

The fixed point

c)

A simple machine in which either a wheel turns a wheel around a central pivot

d)

A simple machine having an arm that moves around a fixed point

119.

What is a pulley...?

a)

A wheel that has a groove along its edge

b)

Something you pull on

c)

A wheel and axle

d)

A complex machine

120.

What is a wheel and axle...?

a)

A simple machine in which either a wheel turns an axle or an axle turns a wheel around a central pivot

b)

Part of a lever on which a person or another machine applies a force

c)

A well

d)

A simple machine having an arm that moves around a fixed point

121.

What is fulcrum...?

a)

The fixed point

b)

A part of the lever on which a person or another machine applies force

122.

What is a effort arm...?

a)

The fixed point

b)

A part of the lever on which a person or another machine applies force

123.

What is the resistance arm...?

a)

The part of the lever that applies a force on an object

b)

A part of the lever on which a person or another machine applies force

124.

Which one is a third class level...?

a)

FEL

b)

LEF

c)

EEL

125.

Which one is a second class lever...?

a)

EFL

b)

LEF

c)

ELF

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