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Year 7 science midterm

Total questions: 144

Worksheet time: 1hrs 29mins

Name
Class
Date
1.
The basic unit of structure and function in the human body is the....
a)
organ
b)
organ system
c)
cell
d)
tissue
2.
Which of the following is the correct order of organization in living things from most basic (simple) to most complex?
a)
a.  Organism, cell, tissue, organ, organ system
b)
a.  Organ system, organ, tissue, cell, organism
c)
a.  Cell, tissue, organ, organ system, organism
d)
a.  Cell, organ, tissue, organ, organism, organ system
3.
A group of similar cells that come together to perform a specific function is a/an
a)
organ
b)
organism
c)
organ system
d)
tissue
4.

The most basic level of organization in the human body

a)

tissue

b)

cell

c)

organ

d)

organ system

5.
When many organ systems work together it can form...
a)
organ
b)
cells
c)
organ system
d)
organism 
6.
This is a example of........ 
a)
organ system
b)
cells
c)
organ
d)
tissue
7.
This is a example of ........
a)
cell
b)
organ system
c)
organ
d)
tissue
8.
What is the largest organ for the human body?
a)
heart
b)
lungs
c)
skin
d)
muscles 
9.

In most animals, combinations of various tissues make up functional units called

a)

epithelial cells

b)

organs

c)

organ systems

d)

populations

10.

The stomach helps break down food for digestion. Which BEST describes the stomach?

a)

It is part of a cell with a fuction

b)

It is a single cell that performs a life function

c)

Made up of a small number of cells that perform a single function

d)

Composed of millions of cells of different types working together to perform a function

11.
A group of organs that work together to perform big jobs for your body is an organ system.
a)
True
b)
False
12.

This picture represents which of the levels of organization?

a)

atom

b)

organ

c)

organelle

d)

cell

13.

This picture represents which of the levels of organization?

a)

tissue

b)

organism

c)

organ

d)

organ system

14.

This system allows things to move within the body.

a)

muscular

b)

digestive

c)

circulatory

d)

respiratory

15.

Which of the following statements is true about the organ system shown in the picture?

a)

It provides structure to the body and protect internal organ

b)

It transports oxygen, nutrients and other substances and carry away wastes.

c)

It breaks down food and absorbs nutrients.

d)

It supports the body and allows it to move.

16.

Which of the following statements best describes about these cells?

a)

These cells are basic unit of living organisms.

b)

These cells can be found in both animal and plants.

c)

Some of these cells have the same function.

d)

These cells have special features that allow them to perform their functions effectively.

17.

Which of the following shows the correct sequence of air passage into the lungs?

a)

trachea → larynx → air sacs → bronchi

b)

larynx → trachea → bronchi → air sacs

c)

air sacs → larynx → trachea → bronchi

d)

larynx → bronchi → trachea → air sacs

18.

The exhaled air from our body consists mostly of

a)

carbon dioxide.

b)

nitrogen.

c)

oxygen.

d)

water vapour.

19.
Mechanical movement to inhale and exhale air
a)
Gas Exchange
b)
Respiration
c)
Breathing
d)
Transport
20.

Gas exchange is needed to supply _____________ to cells and remove __________________

a)

carbon dioxide; oxygen

b)

oxygen; food

c)

oxygen; carbon dioxide

d)

carbon dioxide; water

21.
The movement by diffusion of oxygen and carbon dioxide across a membrane
a)
Ventilation
b)
Breathing
c)
Gas exchange
d)
Respiration
22.
Respiration is the 
a)
Intake of oxygen and release of carbon dioxide over a membrane
b)
Release of energy from food inside cells
c)
Mechanical movement to inhale and exhale air
d)
Feature that enable an animal to survive in its habitat
23.

What is the main function of the respiratory system?

a)

to provide oxygen and remove carbon dioxide from the body

b)

to bring oxygen to the body

c)

to break down food and absorb nutrients

d)

to remove oxygen from the body and deliver carbon dioxide

24.
a)
A
b)
B
c)
C
d)
D
25.
The trachea leads to the...
a)
Bronchioles
b)
Bronchi
c)
Esophagus
d)
Pulmonary Vessel
26.

The air sacs that are covered with capillaries where gas exchange takes place.

a)

Bronchi

b)

Trachea

c)

Oxygen

d)

Alveoli

27.
Letter D is pointing to which Respiratory organ?
a)
Alveoli
b)
Diaphragm
c)
Lung
d)
Bronchi
28.

The exhaled air from our body consists mostly of__________ Check all boxes that apply

a)

carbon dioxide.

b)

nitrogen.

c)

oxygen.

d)

water vapour.

29.

What is the process of breathing in also called?

a)

Respiration

b)

Exhalation

c)

Combustion

d)

Inhalation

30.

What is the process of breathing out also called?

a)

Respiration

b)

Exhalation

c)

Combustion

d)

Inhalation

31.

The diagram shows a section through the human thorax. Which part is the ribcage?

a)

A

b)

B

c)

C

d)

D

32.

What occurs during inhalation?

a)

A

b)

B

c)

C

d)

D

33.

The diagram shows parts of the respiratory system.


Which two labelled parts move to cause inhalation?

a)

W and X

b)

W and Z

c)

X and Y

d)

X and Z

34.

Which movements take place inside the chest when a person breathes out?

a)

A

b)

B

c)

C

d)

D

35.
What's another name for your knee?
a)
Knee
b)
Nutella
c)
Patella
d)
Nee
36.
The scientific name for skull is______________.
a)
cranium
b)
brain
c)
head
d)
noggin
37.
What bone is this?
a)
Femur
b)
Humorous
c)
Tibia
d)
Fibula
38.
What bone is this?
a)
Rib Cage
b)
Clavicle
c)
Mandible
d)
Vertebrae
39.
True or False.
Blood cells are produced in the bone marrow found in long bones.
a)
True
b)
False
40.
The largest and strongest bone in the body is your femur. 
a)
True
b)
False
41.
What bone is highlighted?
a)
Scapula
b)
Humorous
c)
Clavicle
d)
Costal Cartilage 
42.
What do your bones protect?
a)
organs
b)
skin
c)
muscles
d)
feelings
43.

Which is not a function of skeletal system?

a)

Protection

b)

Gas exchange

c)

Movement

d)

Shape and support

44.

What is a joint?

a)

The place where 2 or more bones meet.

b)

A thin membrane that covers the surface of a bone.

c)

A band of tissue that holds the bones together

d)

Connective tissue

45.

Name the joint that makes up elbow, knee and fingers

a)

Ball-and-socket joints

b)

Hinge joints

c)

Pivot joints

d)

Gliding joints

46.

What is the function of the bone marrow?

a)

To make protein

b)

To make red blood cells and white blood cells

c)

reduce friction

d)

to hold bones together

47.

What are the ends of bones covered with that helps reduce friction when to bones are rubbed together.

a)

Sternum

b)

tendon

c)

ligament

d)

cartilage

48.

A tough band of tissue that holds bone together at the joints are called?

a)

tendons

b)

ligaments

c)

cartilage

49.

4. Which of the following is generally called a Sprain?

a)

Hairline fracture

b)

Greenstick fracture

c)

Pulling of the ligament

d)

Muscle tear

50.

Which of the following is a Ball and Socket joint

a)

Ankle joint

b)

Elbow joint

c)

Shoulder joint

d)

Thumb joint

51.

Choose the correct stament

a)

A muscle is rigid and flexible.

b)

A muscle is rigid and hard.

c)

A muscle is flexible and hard.

d)

A muscle is soft and flexible.

52.

Tendons connect...

a)

bones to joints.

b)

muscles to bones.

c)

bones to bones.

d)

muscles to muscles.

53.

All the bones together form...

a)

the tendons.

b)

the joints.

c)

the skeleton.

d)

the musculoskeletal system.

54.

Which help you bend your body.

a)

Skeleton

b)

Joints

c)

Muscles

55.

What is the function of the skeleton?

a)

Support and shape

b)

Movement

c)

Protection

d)

All of the above

56.

Joints - A place where

a)

1 bone meets

b)

2 or more bones meet

c)

No bones meet

57.
Connects bone to bone
a)
Ligament
b)
Tendon
c)
Cartilidge
58.

Hip and shoulder have examples of this type of joint

a)

ball and socket

b)

Fixed

c)

hinge

59.

What is an example of a fixed joint?

a)

Vertebrae

b)

Elbow

c)

Skull

60.

The knee joint is

a)

Hinge

b)

fixed

c)

Ball and socket

61.

True or False: you have joints in different parts of your body.

a)

True

b)

False

62.

True or False: muscles and bones work together to move your body.

a)

True

b)

False

63.

They cover your skeleton

a)

Bones

b)

Muscles

c)

Tendons

d)

Joints

64.

Muscles are formed from tissues that contract and relax, producing movement.

a)

False

b)

True.

65.

Name the highlighted muscle

a)

triceps

b)

biceps

66.
When a muscle contracts, it _______
a)
gets longer
b)
gets shorter
c)
gets thinner
d)
grows hair
67.
Muscles always work in _____
a)
pairs
b)
groups of 3
c)
bones
d)
joints
68.

Which type of joint gives you the largest range of motion?

a)

Fixed joint

b)

Ball-and-socket joint

c)

Hinge joint

69.

The main purpose of synovial fluid is:

a)

Keeping bones moist

b)

Lubrication

c)

Strengthening tendons and cartilage

d)

Protecting the spinal cord

70.

What is the slippery surface that cover the bones?

a)

synovial membrane

b)

synovial fluid

c)

ligament

d)

cartilage

71.
the starting materials in a chemical reaction
a)
Products
b)
Reactants
c)
Starters
d)
Enders
72.
The substances listed on the right side of a chemical equation are the
a)
Yields
b)
Reactants
c)
Products
d)
Precipitates
73.

The process by which one or more substances change to produce one or more different substances

a)

Chemical Process

b)

Reactant

c)

Chemical Reaction

74.

Is a copper penny turning greenish after a few years a chemical or physical change?

a)

Chemical Change

b)

Physical Change

75.
_______________ can speed up the rate of reactions and/or lower the amount of energy needed for
the reaction to take place.
a)
Carbohydrates
b)
Fuel source
c)
Chemical
d)
Catalyst
76.
Element or compound?
H2O
a)
element
b)
compound
77.
Is melting an object technically known as a chemical reaction? 
a)
maybe?
b)
Yes
c)
No
78.
What is decomposition?
a)
putting substances together
b)
breaking substances apart
c)
element replacing another element in a compoud
d)
burning of a subtance
79.
The only way you can be certain that a chemical reaction has occurred is by? 
a)
Light has been emitted 
b)
a colour change has occurred 
c)
bubbles appear 
d)
identifying one or more new chemical products 
80.
Heating up two reactants will make the reaction...
a)
stay the same
b)
go slower
c)
become constant
d)
go faster
81.
How can you increase the rate of a reaction
a)
Decrease the pressure
b)
Increase the rate of collisions
c)
Decrease the concentration
d)
Increase the concentration
82.
Will increasing the surface area of a catalyst make a difference to the speed of the reaction?
a)
yes
b)
no
83.
What is the rate of reaction?
a)
How fast a reaction is 
b)
How big a reaction is
c)
How loud a reaction is
d)
How much gas a reaction produces
84.

Identify the product(s) in this word equation

a)

Sodium

b)

Sodium chloride

c)

Sodium and Chlorine

d)

Sodium and sodium chloride

85.

In a word equation the REACTANTS

a)

Are written on the right hand side of the arrow

b)

Are produced in a chemical reaction

c)

Are always the same

d)

Are the substances that react together

86.

The products in this reaction are?

a)

Two solids

b)

One solid and one gas

c)

Three solids and a gas

d)

Two solids and a gas

87.

The new substances formed in a chemical reaction are called

a)

Reactants

b)

Atoms

c)

Products

d)

Reagents

88.

What are the reactants in this word equation?

a)

Carbon dioxide and oxygen

b)

Carbon dioxide and water

c)

Oxygen and glucose

d)

Oxygen and water

89.

In a chemical reaction...

a)

New atoms are created

b)

Atoms rearrange

c)

Atoms are destroyed

d)

Nothing Happens

90.

In this chemical reaction zinc is a...

a)

Product

b)

Reactant

c)

Neither

91.

Magneisum reacts with oxygen to form magnesium oxide. The correct word equation is...

a)

A

b)

B

c)

C

d)

D

92.
When a CHEMICAL reaction occurs, what is made?
a)
No new substance is made.
b)
A new substance is made with new atoms formed
c)
A new substance is made, with existing atoms rearranged
d)
All substances remain the same, but physical state may change.
93.

Sodium reacts with chlorine to produce sodium chloride. Choose the correct word equation.

a)

sodium chloride → chlorine + sodium

b)

sodium + carbon dioxide → sodium carbonate

c)

sodium + chlorine → sodium chloride

94.

Iron reacts with sulfur to produce iron(II) sulfide. Choose the correct word equation.

a)

iron + solid → iron sulfide

b)

iron + sulfur → iron sulfide

c)

iron sulfide + iron→ sulfur

d)

sulfur + iron sulfide → iron

95.

Choose 3 words or phrases that could be used to translate the (aq) symbol

a)

water

b)

aqueous

c)

dissolved in water

d)

liquid

e)

solution

96.

What state of matter is this substance?

a)

solid

b)

liquid

c)

gas

d)

aqueous

97.

What state of matter is this substance?

a)

solid precipitate

b)

dissolved in water

c)

released as a gas

d)

liquid

98.

According to the chemical equation, which compound would form a precipitate?

a)

Co(NO3)2

b)

NaOH

c)

NaNO3

d)

Co(OH)2

99.

What does the symbol inside the circle mean?

a)

"yields, or produces"

b)

"dissolved in water"

c)

"forms a precipitate"

d)

"released as a gas"

100.

In a word equation, what should be used when writing the reactants and products?

a)

Words only

b)

A mixture of words and chemical symbols

c)

Chemical symbols only

101.

Iron (a grey metal) reacts with sulfur (a smelly yellow solid) to produce iron sulfide (a black solid).

a)

iron + sulfur →\rightarrow iron sulfide

b)

iron + sulfur →\rightarrow iron sulfur

c)

iron + sulfide →\rightarrow iron sulfide

d)

iron + sulfur →\rightarrow iron sulfite

102.

Magnesium (a grey metal) can be burned in air to produce magnesium oxide (a white powder). Which is the correct word equation for the reaction that happens?

a)


magnesium + oxygen →\rightarrow iron oxide

b)

magnesium + air gases →\rightarrow magnesium oxide

c)

magnesium + oxygen →\rightarrow magnesium oxide

d)

magnesium + air gases →\rightarrow white powder

103.

Nitrogen and hydrogen react together to form ammonia. Give the word equation for the reaction.

a)

Ammonia →\rightarrow Nitrogen + Hydrogen

b)

Nitrogen + hydrogen →\rightarrow Ammonia

c)

Nitrogen →\rightarrow Ammonia + Hydrogen

d)

Hydrogen + Ammonia →\rightarrow Nitrogen

104.

Which symbol shows a chemical reaction has occured?

a)

A

b)

B

c)

C

d)

D

105.

A physical change is the same as a chemical change

a)

TRUE

b)

FALSE

106.

Identify the product(s) in this word equation

a)

Sodium

b)

Sodium chloride

c)

Sodium and Chlorine

d)

Sodium and sodium chloride

107.

In a word equation the REACTANTS

a)

Are written on the right hand side of the arrow

b)

Are produced in a chemical reaction

c)

Are always the same

d)

Are the substances that react together

108.

The products in this reaction are?

a)

Two solids

b)

One solid and one gas

c)

Three solids and a gas

d)

Two solids and a gas

109.

The new substances formed in a chemical reaction are called

a)

Reactants

b)

Atoms

c)

Products

d)

Reagents

110.

What are the reactants in this word equation?

a)

Carbon dioxide and oxygen

b)

Carbon dioxide and water

c)

Oxygen and glucose

d)

Oxygen and water

111.

In a chemical reaction...

a)

New atoms are created

b)

Atoms rearrange

c)

Atoms are destroyed

d)

Nothing Happens

112.

In this chemical reaction zinc is a...

a)

Product

b)

Reactant

c)

Neither

113.

Magneisum reacts with oxygen to form magnesium oxide. The correct word equation is...

a)

A

b)

B

c)

C

d)

D

114.

Iron reacts with sulfur to produce iron(II) sulfide. Choose the correct word equation.

a)

iron + solid → iron sulfide

b)

iron + sulfur → iron sulfide

c)

iron sulfide + iron→ sulfur

d)

sulfur + iron sulfide → iron

115.

Sodium reacts with chlorine to produce sodium chloride. Choose the correct word equation.

a)

sodium chloride → chlorine + sodium

b)

sodium + carbon dioxide → sodium carbonate

c)

sodium + chlorine → sodium chloride

116.

What is another name for burning?

a)

Neutralisation

b)

Combustion

c)

Thermal decomposition

d)

Displacement

117.

What is produced in complete combustion of a fuel?

a)

Carbon

b)

Carbon monoxide

c)

Carbon monoxide and water

d)

Carbon dioxide and water

118.

During incomplete combustion, a toxic gas called (a)   is produced (give the name).

119.

Which of these gases cause acid rain?

a)

Carbon monoxide

b)

Water vapour

c)

Nitrogen dioxide

d)

Sulfur dioxide

120.

What environmental problem is caused by carbon dioxide?

a)

Greenhouse effect

b)

Acid rain

c)

Breathing problems

d)

Smog

121.

The test for carbon dioxide gas is to bubble it through (a)   .

122.

How much carbon dioxide is made when 12g of carbon react with 32g of oxygen?

a)

20g

b)

12g

c)

44g

d)

88g

123.

Why does incomplete combustion happen?

a)

Because there isn't enough oxygen

b)

Because there isn't enough carbon dioxide

c)

Because there isn't enough fuel

d)

Because carbon is made

124.

Can humans see carbon dioxide with their eyes?

a)

Yes. Carbon Dioxide is a gray colored gas.

b)

Yes, but only if the lighting is just right.

c)

Usually no. Carbon Dioxide gas is only visible in high concentrations.

d)

No. Carbon Dioxide is an invisible gas.

125.

What is the correct name for 'natural gas'?

a)

Oxygen

b)

Petroleum

c)

Methane

d)

Carbon dioxide

126.

Which of these fuels will completely combust (burn) to form water only (and is therefore unlikely to increase global warming)?

a)

C4H10

b)

Fuel oil (a fraction from oil used to power ships)

c)

Pure carbon (e.g. graphite)

d)

Pure hydrogen (H2)

e)

Methane

127.
What are fossil fuels?
a)
Dinosaur bones
b)
Resources made from once living organisms 
c)
Combination of different rocks
d)
Gas Stations
128.
1.  What is the symbol for carbon dioxide?
a)
CO2   
b)
CO2  
c)
 CO2 
d)
CO
129.

What does the "thermal" in thermal decomposition mean?

a)

sulfur

b)

catalyst

c)

heat

d)

oven

130.

What does the "thermal" in thermal decomposition mean?

a)

sulfur

b)

catalyst

c)

heat

d)

oven

131.

What colour is copper(II)carbonate

a)

white

b)

blue

c)

colourless

d)

green

132.

copper(II)carbonate → ___________ + carbon dioxide

a)

copper(I) oxide

b)

copper(II) oxide

c)

copper oxide

d)

copper(III) oxide

133.
Thermal decomposition is also known as
a)
breaking apart by heating
b)
heating and building
c)
breaking apart by cooling
d)
cooling and building
134.

What happens when CO2 is bubbled through limewater

a)

It changes from pink to blue

b)

It goes pop

c)

It goes cloudy

d)

It gets hot

135.

What colour is copper (II) oxide

a)

white

b)

green

c)

blue

d)

black

136.

______________ (+ heat) → zinc oxide + carbon dioxide

a)

zinc carbonate

b)

zinc oxide

c)

zinc dioxide

d)

zinc hydrogen carbonate

137.

Why does thermal decomposition need heat energy

a)

to make magic

b)

to break bonds

c)

to make water

d)

to work as a catalyst

138.
What is it called when two substances come together, and their atoms are rearranged?
a)
Reaction 
b)
catalyst  
c)
reversible  
d)
change
139.
Which is not a sign of a chemical reaction?
a)
fizzing  
b)
temperature change   
c)
colour change   
d)
crumbling 
140.
What is the term for when a large molecule is broken down into smaller molecules?
a)
Reaction  
b)
decomposition 
c)
atom  
d)
melting
141.
1.  What is the symbol for carbon dioxide?
a)
CO2   
b)
CO2  
c)
 CO2 
d)
CO
142.
1.  An endothermic reaction…
a)
Gives out heat   
b)
Takes in heat 
143.
In a ___________change, a substance changes into a different substance.
a)
Physical
b)
Chemical
144.

metal hydroxide (+ heat) → ____________ + _________

a)

metal carbonate + water

b)

metal oxide + carbon dioxide

c)

carbon dioxide + water

d)

metal oxide + water

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