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Year 7 Summative Practice

Total questions: 111

Worksheet time: 1hrs 15mins

Name
Class
Date
1.

What is the separation technique in the picture?

a)

Evaporation

b)

Centifugation

c)

Decantation

d)

Crystallization

2.

What is 5?

a)

cooling tube

b)

condenser

c)

distillate

d)

water pump

3.

Which of the following is the correct order of the processes of distillation

a)

heating , evaporating, condensing & cooling

b)

heating , evaporating, cooling & condensing

c)

heating , cooling , evaporating, & condensing

d)

evaporating, heating , cooling , & condensing

4.
Define solubility
a)
how much pressure is in an object has
b)
Surface Area per Temperature
c)
how much solute can dissolve in a solvent
d)
it is a made up word
5.
A liquid made up of a solvent with a solute dissolved in it
a)
solution
b)
soluble
c)
solidified
d)
solar
6.
The diagram shows the apparatus for separating soil and water. What are the labelled parts?
a)
A = distillate, B = filtrate
b)
A = filtrate, B = residue
c)
A = residue, B = filtrate
d)
A = residue, B = distillate
7.

Sugar is a __________________ and water is a __________________. Together, they make a ___________________.

a)

solvent, solute, solution

b)

solution, solvent, solute

c)

solute, solvent, solution

8.

Which substance is MOST soluble at 90 ºC?

a)

Solid A

b)

Solid B

c)

Solid C

9.

Why is solid A the most soluble?

a)

More grams of solid A dissolves in 100g of water

b)

Less grams of solid A dissolves in 100g of water

c)

Solid has a downward curve

10.
In the distillation apparatus shown, what are the parts labelled A and B?
a)
A = funnel, B = thermometer
b)
A = thermometer, B = funnel
c)
A = condenser, B = flask
d)
A = condenser, B = thermometer
11.
Distillation uses two changes of state. what are they?
a)
Evaporation and condensation
b)
Evaporation and freezing
c)
melting and boiling
d)
sublimation and condensation
12.

What is happening inside the part labelled 5?

a)

Condensation (gas to a liquid)

b)

Evaporation (liquid to gas)

c)

Melting (solid to liquid)

d)

Freezing (liquid to solid)

13.

What is at part 2?

a)

Heat condenses the water vapour

b)

Heat evaporates the water in the solution

c)

Heat melts the salt

d)

Heats dissolves the solution

14.

What is the difference between contact and non-contact forces?

a)

Contact forces require eye contact, while non-contact forces do not

b)

Contact forces only occur in outer space, while non-contact forces only occur on Earth

c)

Contact forces involve sound waves, while non-contact forces involve light waves

d)

Contact forces require physical touch between objects, while non-contact forces can act at a distance without direct touch.

15.

Gravity, magnetism and static electricity are:

a)

Contact Force

b)

Non-contact Force

16.
How will this object move? 
a)
It won't move. 
b)
It will move to the right. 
c)
It will move to the left. 
d)
It will move up. 
17.

The three examples pictured are of

a)

Non-contact Forces

b)

Contact Forces

18.

Friction is a

a)

Contact Force

b)

Myth

c)

Non-contact Force

19.

We measure force in

a)

newons

b)

netons

c)

newrons

d)

newtons

20.

What do we call a force that has a net force of zero Newtons and the object does not change its motion?

a)

balanced force

b)

unbalanced force

c)

acceleration force

d)

net force

21.

What is the magnitude and direction of the force in the free body diagram shown?

a)

70 N right

b)

70 N left

c)

50 N right

d)

50 N left

22.

Are the forces balanced or unbalanced?

a)

Balanced

b)

Unbalanced

23.
What is a force?
a)
the PUSH or PULL on an object 
b)
The MOTION an object creates
c)
The objects HITTING one another
d)
Going REALLY FAST
24.
What is the net force?
a)
17 N Right
b)
3 N Right
c)
3 N Left
d)
17 N Left
25.

This object is being pushed on a surface. What direction would it be moving? (pick all that apply):

a)

up

b)

down

c)

left

d)

right

26.

What is water resistance?

a)

Friction between moving object in water.

b)

pulling force

c)

gravity in water

d)

friction between moving object in air

27.

A force can change the following: (tick all that apply)

a)

Weight

b)

Direction

c)

Speed

d)

Shape

28.

What is force A?

a)

Thrust

b)

Water resistance

c)

Upthrust

d)

Weight

29.

What is force B?

a)

Thrust

b)

Water resistance

c)

Upthrust

d)

Weight

30.

What is force C?

a)

Thrust

b)

Water resistance

c)

Upthrust

d)

Weight

31.

What is force D?

a)

Thrust

b)

Water resistance

c)

Upthrust

d)

Weight

32.

What does a larger arrow indicate in a force diagram?

a)

The size of the arrow has no meaning

b)

Larger the arrow, smaller the force

c)

Larger the arrow, larger the force

33.

Organisms that make their own food

a)

Producer

b)

Consumer

c)

Decomposer

34.

Organisms that obtain energy by feeding on other organisms

a)

Producer

b)

Consumer

c)

Decomposer

35.

Consumers that eat only plants

a)

Carnivores

b)

Omnivores

c)

Herbivores

d)

Scavengers

36.

Consumers that eat only animals

a)

Carnivores

b)

Omnivores

c)

Herbivores

d)

Scavengers

37.

If you constructed a food chain, what role does the plant play?

a)

Producer

b)

Primary Consumer

c)

Secondary Consumer

d)

Tertiary Consumer

38.

The name given to an organism that feeds on other organisms. They do not make their own food.

a)

Animal

b)

Predator

c)

Consumer

d)

Decomposer

39.

What animal is the top predator? 

a)
Grass
b)
Grasshopper
c)
Mouse
d)
Owl
40.

What is a food web?

a)

A web made out of food

b)

a system of interlocking and interdependent food chains.

c)

The food an animal likes to eat.

41.

Name a predator from this diagram.

a)

Snake

b)

Rabbit

c)

Fox

d)

Owl

42.
Below is an example of a simple food chain.

Acorn → Squirrel → Fox → Mountain Lion 

What will most likely happen if squirrels are removed from the food chain?
a)
The fox will eat acorns
b)
The fox population will decrease
c)
The trees will produce fewer acorns.
d)
The mountain lion population will increase
43.

Choose the correct answer about the ecosystem:

a)

grass->deer->tiger

b)

grass->tiger->deer

c)

tiger->deer->grass

44.

When energy is passed in an ecosystem from one trophic level to the next, only ___ percent of the energy will be passed on.

a)

1000

b)

100

c)

1

d)

10

45.

The blue line on the graph shows the rabbit population, and the red line shows the wolf population. Which statement about the graph is true?

a)

When the wolf population begins to increase, the rabbit population begins to decrease.

b)

When the rabbit population is at its lowest, the wolf population is also at its lowest.

c)

When the rabbit population is at its highest, the wolf population is also at its highest.

d)

When the wolf population begins to increase, the rabbit population also begins to increase.

46.

In this food web, how many different organisms feed on the producer?

a)

1

b)

2

c)

3

d)

4

47.

If the bird population DECREASED, which populations would INCREASE as a result?

a)

bees and deer

b)

bees and grasshoppers

c)

snakes and hawks

d)

grasshoppers and rabbits

48.

In this aquatic food web, which organisms eat the squid?

a)

It has no predators

b)

seagull and krill

c)

seal and krill

d)

seal and seagull

49.

If a disease eliminated the hawk population, which population would immediately INCREASE?

a)

grasshopper

b)

snake

c)

grass

d)

hawk

50.

If a disease eliminated the frog population, which population would immediately INCREASE?

a)

grasshopper

b)

snake

c)

hawk

d)

grass

51.

If a disease eliminated the snake population, which population would immediately DECREASE?

a)

hawk

b)

frog

c)

grasshoppers

d)

grass

52.
Element or compound?
H2O
a)
element
b)
compound
53.
________ result(s) in no new substances.
a)
A physical change
b)
A chemical change
c)
Physical and chemical changes
d)
None of the above
54.
Which observation(s) might be used as evidence that a chemical reaction occurred?
a)
Color change
b)

Gas released or bubbles

c)

New substance formed

d)
All of the above
55.
Is water melting a physical or chemical change?
a)
Physical
b)
Chemical
56.

Is evaporation a physical or chemical change?

a)
Physical
b)
Chemical
57.

When baking soda and vinegar mix, it is a neutralisation reaction. Is this a chemical or physical change?

a)
Physical
b)
Chemical
58.

How many different elements are there?

a)

10

b)

50

c)

100

d)

118

59.

Each element is made up of its type of _______ .

a)

atoms

b)

block

60.

What element has the symbol N?

a)

Sodium

b)

Nitrogen

c)

Silicon

d)

Neon

61.

What symbol does Lithium?

a)

Li

b)

Na

c)

Si

d)

L

62.

What element has the symbol Na?

a)

Nitrogen

b)

Helium

c)

Sodium

d)

Beryillium

63.

What element has the symbol K?

a)

Potassium

b)

Argon

c)

Copper

d)

Iron

64.

Elements are located in the ............

a)

specific table

b)

periodic table

c)

Chemical museum

d)

non of the above

65.
What is water?
a)
element
b)
compound
c)
mixture
66.

This picture represents which of the following?

a)

molecules of an element

b)

molecule of a compound

c)

mixture

67.
a)

Element

b)

Molecules of a compound

c)

Molecule of an elememt

d)

Mixture

68.
a)
Element
b)
Molecule
c)
Compound
d)
Mixture
69.
(Element or Compound)
       C2H8O 
a)
Element
b)
Letters
c)
Numbers
d)
Compound
70.
A molecule is
a)
two or more atoms bonded together
b)
one type of atom
c)
smaller than an atom 
d)
an element
71.
Which of the following represents an element?
a)
H2O
b)
H2
c)
NaCl
d)
CaCO3
72.

The symbol of Chlorine is

a)
Cl
b)

C

c)

cl

d)

Ch

73.

Everything is made of these substances. There are about 100 of these known substances. This substance is made of only one type of atom and is called —

a)
an element
b)
a mixture
c)
a compound
d)
a salt
74.

When lithium metal is dropped into a container of water, the lithium sparks and fizzes and the water begins to bubble violently. The conclusion that can be drawn from that is:

a)

A new substance is created because this is a chemical change.

b)

No new substances are created because there is a chemical change.

c)

No new substances are created because this is a physical change.

d)

A new substance is created because this is a physical change.

75.

This is a __________ change.

a)

Physical

b)

Metaphysical

c)

Chemical

d)

Logical

76.

Is combustion (burning) a physical or chemical change?

a)

Physical

b)

Chemical

77.

A physical change...

a)

Changes the physical properties of an object, but does not create a new substance. It can be reversed.

b)

Creates a new substance and cannot be undone.

78.

A chemical change...

a)

Changes the physical properties of an object, but does not create a new substance.

b)

Creates a new substance and cannot be reversed.

79.

Is condensation (gas to liquid) an example of a physical or chemical change?

a)

Physical

b)

Chemical

80.
Sound waves travel the FASTEST through _____________.
a)
gases
b)
liquids
c)
solids
81.
A sound with a high pitch would have
a)
a low frequency
b)
a high frequency
c)
a low amplitude
d)
a high amplitude
82.
Why is sound able to travel faster through a solid than a gas?
a)
Gas molecules are packed tightly.
b)
Sound does not travel faster through a solid than a gas.
c)
Solid molecules are packed tightly.
d)
Gas molecules move slowly.
83.

Name structure label with 5

a)

Eardrum

b)

Cochlea

c)

Pinna

d)

Eustachian tube

84.

What happens in the eardrum?

a)

Sound waves vibrate the skin and delivers vibrations

b)

Sound waves make the tiny hairs in your ear move

c)

Carries the message to the brain

85.

Ultrasound is

a)

Less than 20 Hz

b)

20 Hz to 20000Hz

c)

20Hz to 20000Hz

d)

Greater than 20000Hz

86.

The number of wavelengths that pass a point each second

a)

frequency

b)

wavelength

c)

pitch

d)

amplitude

87.

The unit for measuring frequency is the ---

a)

joule

b)

hertz

c)

gram

d)

newton

88.
In General Sound waves travel the slowest in __________
a)
solid
b)
liquid
c)
Gas
d)
Plasma
89.

What is this?

a)

Pinna

b)

Hearing Nerve

c)

Cochlea

d)

Ear Drum

e)

Anvil

90.

What is this?

a)

Ear Drum

b)

Ear Canal

c)

Pinna

d)

Hammer

e)

Cochlea

91.

What is this?

a)

Anvil

b)

Hammer

c)

Stirrup

d)

Ear Canal

e)

Ear drum

92.

What do the ossicles (ear bones) do?

a)

Transmit and amplify vibrations to the cochlea

b)

Detect and channel vibrations

c)

Pass on impulses to the brain

93.

What does the cochlea do?

a)

Produce nerve impulses from vibrations. Contains a fluid and tiny hairs.

b)

Detect and channel vibrations.

c)

Pass on impulses to the brain

d)

Amplify vibrations

94.

Loud sounds or high amplitude sounds cause the eardrum to vibrate:

a)

Slower

b)

Less

c)

Further (up and down)

d)

faster

95.

High pitch/frequency sounds cause the eardrum to vibrate:

a)

Slower

b)

Less

c)

further

d)

faster

96.

What does this warning symbol mean?

a)

Toxic

b)

Corrosive

c)

Flammable

d)

Irritant

97.

What does this warning symbol mean?

a)

Toxic

b)

Corrosive

c)

Flammable

d)

Irritant

98.

Lemon juice is an acid

a)

True

b)

False

99.

A chemical reaction in which an acid and an alkali react to form a salt and water

a)

neutralisation

b)

combustion

c)

alkalinity

d)

acidity

100.

Which statement best describes the colour changes of litmus paper when reacting with an acid or alkali?

a)

Red litmus shows no change in an alkali.

b)

Blue litmus shows no change in an acid.

c)

Blue litmus turns red in an acid. Red litmus turns blue in an alkali.

d)

Red litmus turns blue in an acid. Blue litmus turns red in an alkali.

101.

The example of an alkaline substance is :-

a)

Milk

b)

Oven cleaner

c)

Egg

d)

Vinegar

102.

What is the variable called if it is what you change in the experiment?

a)

Independent

b)

Dependent

c)

Constant

d)

Control

103.

What do you call the factor that is measured in the experiment?

a)

Independent

b)

Dependent

c)

Constant

d)

Control

104.

The plants in the experiment below are all given different types of fertilizer. The fertilizer is the...

a)

Independent variables

b)

Dependent variable

c)

Constant

d)

Control

105.

The plant growth being measured is called the...?

a)

Independent variable

b)

Dependent variable

c)

Constant

d)

Control

106.
What are two ways that an ultrasound is used?
a)
transverse waves and longitudinal waves
b)
hertz and meters
c)
sonar and ultrasound imaging
d)
music instruments and amplify the sound
107.

Which of these animals use(s) echolocation? Choose all that apply.

a)

bats

b)

dolphins

c)

elephants

d)

cats

e)

owls

108.

What is the pH level of sodium hydroxide (drain cleaner)?

a)
13
b)
14
c)
1
d)
2
109.
If the distance represented by the letter A were increased, how would it change the way the sound was heard?
a)
The sound would be higher. 
b)
The sound would be lower. 
c)
The sound would be softer. 
d)
The sound would be louder. 
110.

Loudness of sound depends on

a)

Frequency

b)

Amplitude

c)

Wave length

d)

Velocity

111.

The high pitch or high frequency sound is

a)

b)

c)

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