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Worksheets

Year 8 Science

Total questions: 50

Worksheet time: 35mins

Name
Class
Date
1.

The law of conservation energy states:

a)

Energy can be created, but not destroyed

b)

Energy cannot be created but can be destroyed

c)

Energy can not be created nor destroyed

2.

Kinetic Energy

a)

Energy of movement

b)

Energy that is stored

c)

Energy that is made

3.

The 'v' in the kinetic energy formula stands for

a)

Velocity

b)

Viscosity

c)

Variance

4.

Potential Energy

a)

Energy of movement

b)

Energy that is stored

c)

Energy that can be destroyed

5.

The 'g' in the potential energy formula is:

a)

8.9 m/s

b)

19.8 m/s

c)

9.8 m/s

6.

An example of potential energy is

a)

Chemical

b)

Electrical

c)

Light

7.

An example of kinetic energy is

a)

Elastic

b)

Thermal

c)

Gravitational

8.

An example of an energy transfer is

a)

electrical -> sound

b)

electrical -> chemical

c)

elastic -> sound

9.

An example of an energy transformation is

a)

chemical -> nuclear

b)

electrical -> heat

c)

gravitational -> kinetic

10.

What is Newton's First Law of Motion

a)

An object in motion will stay in motion and an object at rest will stay in rest, unless acted on by another force

b)

Force is equal to the change in momentum per change in time. For constant mass, force equals mass times acceleration

c)

For every action, there is an equal and opposite reaction

11.
What type of rock is formed when magma and lava cools and hardens?
a)
minerals
b)
sedimentary
c)
igneous
d)
metamorphic
12.
A rock formed from fragments of other rocks is a(n)
a)
Metamorphic Rock
b)
Sedimentary Rock
c)
Extrusive Rock
d)
Igneous Rock
13.
An igneous rock containing large crystals is most likely a(n)
a)
Chemical Rock
b)
Foliated Rock
c)
Extrusive Rock
d)
Intrusive Rock
14.
If heat and pressure inside the Earth cause a rock to melt, the material that formed would be
a)
Metamorphic
b)
Magma
c)
Sedimentary
d)
Igneous
15.
You find a rock in which the grains are arranged in parallel bands of white and black crystals.  The rock is probably a(n)
a)
Igneous rock
b)
Sedimentary rock
c)
Metamorphic rock
d)
Extrusive rock
16.
As lava cools and crystallizes, what type of rock will form?
a)
Sedimentary
b)
Metamorphic
c)
Extrusive Igneous
d)
Intrusive Igneous
17.
Which of the following is not a rock
a)
Pumice
b)
Lava
c)
Halite
d)
Sandstone
18.
The three groups of rocks are classified by
a)
How they form
b)
Color
c)
Grain size
d)
Chemical Composition
19.
Formed by compacting & cementing of sediments
a)
Sedimentary
b)
Metamorphic
c)
Extrusive Igneous
d)
Intrusive Igneous
20.
Formed by weathering & erosion
a)
magma
b)
sediments
c)
sedimentary rock
d)
intrusive igneous
21.
Has large crystals because of slow cooling
a)
sedimentary rock
b)
metamorphic rock
c)
intrusive igneous rock
d)
extrusive igneous rock
22.
Has small or no crystals because of rapid cooling
a)
sedimentary
b)
metamorphic
c)
extrusive igneous
d)
intrusive igneous
23.
Contains fossils. 
a)
sedimentary rocks
b)
metamorphic rocks
c)
extrusive igneous rocks
d)
intrusive igneous rocks
24.
What is metamorphic rock?
a)
Rock that forms when melted, or molten rock from deep below Earth's surface cools and hardens.
b)
A solid material made up of one or more minerals.
c)
Rock that forms when existing rocks are changed by heat, pressure, or chemicals beneath the Earth's surface.
25.
This rock was another type of rock that was heated and compressed over time. What type of rock is this?
a)
Sedimentary
b)
Igneous
c)
Metamorphic
26.
Which of the words below describe mud, sand, and tiny bits of rocks that cement together to form a type of rock?
a)
stalactites
b)
magmas
c)
metamorphs
d)
sediments
27.
When sediments are pressed together tightly, this is called ____________.
a)
Compaction
b)
Cementation
c)
Weathering
d)
Erosion
28.
The process in which sediment are fused or glued together.
a)
compaction
b)
deposition
c)
organic rock
d)
cementation
29.

NaOH is an example of:

a)

an element

b)

a compound

c)

an atom

d)

a pure substance

30.

Ashlea identifies a cell as being a plant cell. She labels her diagram. Which of the following would identify only a plant cell?

a)

Ribosomes

b)

Nucleus

c)

Mitochondria

d)

Chloroplasts

31.

A muscle cell produces a lot of energy for an organism. Which organelle would be present?

a)

Many nuclei

b)

Many mitochondria

c)

Many ribosomes

d)

Many vacuoles

32.

Which of the following is NOT a characteristic of an artery?

a)

Generally carries oxygenated blood

b)

Has thick walls

c)

Carries blood away from the heart

d)

Contains valves to prevent back flow of blood

33.

Which of the following can be used to describe the circulatory system?

a)

Double loop - blood travels to heart then lungs, then heart, then body, then heart again continuously.

b)

Multi directional - blood can flow in both directions through the system

34.

Which of the following carries deoxygenated blood?

a)

Aorta

b)

Pulmonary Vein

c)

Pulmonary Artery

d)

Vena Cava

35.

Identify the cell shown, and the correct evidence:

a)

Animal cell, has a cell wall

b)

Prokaryotic cell, has a nucleus

c)

Plant cell, has a large central vacuole

d)

It cannot be determined

36.

What are the two reactants in the photosynthesis equation?

a)

Sugar + Water

b)

Carbon Dioxide + Water

c)

Sugar + Oxygen

d)

Carbon Dioxide + Oxygen

37.

What type of energy is used in photosynthesis?

a)

Chemical

b)

Light

c)

Sound

d)

Electrical

38.

If blood has finished travelling through the pulmonary vein, where has it just arrived?

a)

left ventricle

b)

left atrium

c)

right ventricle

d)

right atrium

39.
what type of energy is stored in a battery?
a)
electrical
b)
chemical
c)
thermal
d)
mechanical
40.
Which of the following is a chemical change rather than a physical change 
a)
boiling water at 100 C
b)
chopping up a piece of wood. 
c)
cooking a cake 
d)
ice carbon dioxide sublimating to gas 
41.
A metal like copper is said to be ductile. This means it can be ... 
a)
corroded easily
b)
bent into wires 
c)
heat up and conduct heat
d)
bent into sheets 
42.
The process going from a gas to a liquid is called ...
a)
evaporation 
b)
melting 
c)
condensation 
d)
sublimation 
43.
The only way you can be certain that a chemical reaction has occured is by? 
a)
Light has been emitted 
b)
a colour change has occurred 
c)
bubbles appear 
d)
identifying one or more new chemical products 
44.
A Precipitate forms 
a)
when a gas is bubble through a liquid 
b)
a lighter taper causes a gas to burn 
c)
in a liquid or gas  after a reaction and causes cloudiness (caused by a solid forming) 
45.
The number of atoms of oxygen in 
Cu(NO3)2 is ...
a)
2
b)
5
c)
6
d)
zero 
46.
a copper penny turning greenish after a few years.
a)
Chemical Change
b)
Physical Change
47.
An gel ice pack getting cold after you put it in the freezer for an hour.
a)
Chemical Change
b)
Physical Change
48.
Which of the following IS a physical change?
a)
Getting a haircut
b)
Rusty metal
c)
sour milk
d)
A compound
49.
Which of the following IS a chemical change
a)
using chalk
b)
water freezing
c)
slicing cheese
d)
digestion
50.

What is the scientific method?

a)

A systematic procedure for how to conduct a scientific experiment

b)

The process of solving a problem

c)

A way of making non-scientific observations

d)

A way to summarize findings from multiple investigations

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