Quiz about PRACTICE FOR PEARSON TRIAL SCI9

Question 1

Subatomic particle with negative charge is

Accepted Answer

Electron

Answer

Proton

Answer

Neutron

Question 2

Which particle has a positive electrical charge?

Accepted Answer

proton

Answer

neutron

Answer

electron

Question 3

Which particles make up the nucleus of an atom? (you can choose more than one answers)

Accepted Answer

proton

Accepted Answer

neutron

Answer

electron

Question 4

how many atoms make up a molecule of carbon dioxide ( CO₂)?

Accepted Answer

3

Answer

1

Answer

2

Answer

4

Question 5

Which statement is true about the carbon dioxide-oxygen cycle?

Accepted Answer

animals breathe in oxygen and release carbon dioxide which is used by plants

Answer

animals breathe in nitrogen and release oxygen which is used by plants

Answer

animals breathe in nitrogen and release carbon dioxide which is used by plants

Answer

animals breathe in carbon dioxide and release oxygen which is used by plants

Question 6

What is the scientific name for salt?

Accepted Answer

Sodium chloride

Answer

Hydrochloric acid

Answer

Acetic acid

Answer

Potassium chloride

Question 7

NaClrepresents

Accepted Answer

Sodium Chloride

Answer

Sodium bicarbonate

Answer

Sodium carbonate

Answer

Calcium Carbonate

Question 8

Which is the correct chemical symbol for this atom of helium?

Accepted Answer

Question 9

Question 9.

Accepted Answer

cells

tissues

organs

organ systems

Answer

cells

organ systems

organs

tissues

Answer

cells

organs

organ systems

tissues

Answer

organ systems

tissues

organs

cells

Question 10

How do adaptations help animals?

Accepted Answer

All of the answers are correct

Answer

to hide from predators

Answer

to hunt for food

Answer

to survive in their habitats

Question 11

Cactus have spines and waxy leaves to prevent water loss because they live in the ...

Accepted Answer

Desert

Answer

Rocky mountain

Answer

Grassland

Answer

Tropical Rainfroest

Question 12

Question 12.

Accepted Answer

larger ears for cooling the body

Answer

smaller ears for cooling the body

Answer

there is no difference

Answer

both a and b correct

Question 13

SELECT ALL THAT APPLY

How are mass and weight different?

Accepted Answer

mass never changes

Accepted Answer

weight depends on gravity

Answer

mass depends on gravity

Answer

weight never changes

Question 14

Which of these explains why the weight of an astronaut is less on the Moon than on Earth?

Accepted Answer

the Moon's gravitational field strength is smaller than the Earth's

Answer

there is no atmosphere on the Moon

Answer

the astronaut has more mass on the Earth than on the Moon

Answer

there is no gravity on the Moon

Question 15

The diagram shows an outline of part of the Periodic Table.

P, Q, R and S show the position of four elements.

The letters are not the symbols of the elements.

Which two elements are in the same group?

SELECT TWO!

Accepted Answer

Q

Accepted Answer

S

Answer

P

Answer

R

Question 16

What is the decomposer in the picture above?

Accepted Answer

fungus/mushrooms

Answer

grass

Answer

hawk

Answer

frog

Question 17

When you compare the deer to the wolf, the deer would be the

Accepted Answer

prey

Answer

decompser

Answer

predator

Answer

producer

Question 18

Which system is the stomach in?

Accepted Answer

digestive

Answer

respiratory

Answer

skeletal

Answer

circulatory

Question 19

What is the main job of the digestive system?

Accepted Answer

break down foods into nutrients that can be used by the body

Answer

enables us to breathe

Answer

pump blood throughout the body

Answer

support our body

Question 20

What is the atomic number?

Accepted Answer

the number of protons

Answer

the number of protons and neutrons

Answer

the number of neutrons

Answer

the number of electrons

Question 21

What is the mass number defined as?

Accepted Answer

the number of protons and neutrons

Answer

the number of protons

Answer

the number of neutrons

Answer

the number of protons and electrons

Question 22

The pH scale is a range from:

Accepted Answer

0-14

Answer

1-7

Answer

1-14

Answer

1-20

Question 23

A(n) ______ is a substance with a pH less than 7

Accepted Answer

Acid

Answer

Alkaline

Answer

Base

Answer

Buffer

Question 24

A(n) _______ is a substance with a pH greater than 7.

Accepted Answer

Base

Answer

Acid

Answer

Buffer

Answer

Water

Question 25

What is the most likely pH of a strong alkali?

Accepted Answer

14

Answer

1

Answer

7

Answer

8

Question 26

What are the products of aerobic respiration?

Accepted Answer

Carbon dioxide and water

Answer

Glucose and oxygen

Answer

Lactic acid

Answer

Carbon monoxide

Question 27

What are the two products of photosynthesis?

Accepted Answer

Oxygen and Sugar

Answer

Oxygen and Carbon dioxide

Answer

Sunlight and Sugar

Question 28

Which is the correct formula for calcium carbonate?

Accepted Answer

CaCO3

Answer

CaCO

Answer

CaCO2

Answer

Ca2CO

Question 29

Which shows gravitational force that causes Earth to orbit the sun?

Accepted Answer

Question 30

Which part of the digestive system is number 2?

Accepted Answer

oesophagus

Answer

stomach

Answer

small intestine

Answer

tongue

Question 31

Which of these is a disease caused by a virus?

Accepted Answer

flu

Answer

athlete's foot

Answer

cholera

Answer

salmonella

Question 32

Air is a mixture of different gases.

Complete the sentence below using gases from the box.

The greatest proportion of air is ________.

Accepted Answer

NITROGEN

Answer

CARBON DIOXIDE

Answer

OXYGEN

Answer

HYDROGEN

Question 33

Air is a mixture of different gases.

Complete the sentence below using gases from the box.

approximately 21% of the air is ______.

Accepted Answer

OXYGEN

Answer

NITROGEN

Answer

CARBON DIOXIDE

Answer

HYDROGEN

Question 34

HIGHER LEVELS OF CARBON DIOXIDE IN ATMOSPHERE PRODUCE GLOBAL WARMING AND SO INCREASNG THE GREENHOUSE EFFECT

Accepted Answer

TRUE

Answer

FALSE

Question 35

1_______

2_______

3_______

Accepted Answer

1 HYDROGEN MOLECULE

2 HYDROGEN ATOM

3 WATER MOLECULE

Answer

1 OXYGEN MOLECULE

2 HYDROGEN ATOM

3 WATER ATOM

Answer

1 HYDROGEN MOLECULE

2 OXYGEN ATOM

3 WATER MOLECULE

Answer

1 HYDROGEN ATOM

2 HYDROGEN MOLECULE

3 WATER ATOM

Question 36

TRUE OR FALSE about how stomata help the leaf to carry out photosynthesis.

PHOTOSYNTHESIS ALLOW OXYGEN INTO THE LEAF AND ALLOW CARBON DIOXIDE OUT OF LEAF.

Accepted Answer

FALSE

Answer

TRUE

Question 37

There are different types of chemical reaction. Match each type of chemical reaction to its description.

1 ______

2 ______

3 ______

Accepted Answer

1 THERMAL DECOMPOSITION

2 EXOTHERMIC

3 ENDOTHERMIC

Answer

1 THERMAL DECOMPOSITION

2 ENDOTHERMIC

3 EXOTHERMIC

Answer

1 EXOTHERMIC

2 THERMAL DECOMPOSITION

3 ENDOTHERMIC

Answer

1 EXOTHERMIC

2 ENDOTHERMIC

3 THERMAL DECOMPOSITION

Question 38

The diagram shows an outline of the Periodic Table. Five elements have been labelled using the letters P, Q, R, S and T. The letters are not the chemical symbols of the elements.

Choose letters from the diagram to complete the sentences below.

Elements _, _, and_, will have similar

properties.

Accepted Answer

S,P,T

Answer

S,Q,R

Answer

S,T,R

Answer

P,Q,R

Question 39

The diagram shows an outline of the Periodic Table. Five elements have been labelled using the letters P, Q, R, S and T. The letters are not the chemical symbols of the elements.

Choose letters from the diagram to complete the sentences below.

Elements _, _, and_, are from the same

period.

Accepted Answer

P,Q,R

Answer

S,Q,R

Answer

S,T,R

Answer

S,P,T

Question 40

Plant leaves have adapted to enable photosynthesis to take place. The diagram shows some adaptations and possible reasons for them. Draw one straight line from each adaptation to the reason for that adaptation.

WHICH ANSWERS ARE ALL CORRECT?

Accepted Answer

Question 41

The diagram shows a food chain.

(Different terms are applied to organisms in a food chain. Identify each term to the name of the organism that it applies to.

primary consumer = ______

producer=_____

tertiary consumer = ____

Accepted Answer

primary consumer = shrimp

producer= algae

tertiary consumer = seal

Answer

primary consumer = algae

producer= shrimp

tertiary consumer = cod

Answer

primary consumer = seal

producer= polar bear

tertiary consumer = cod

Answer

primary consumer = polar bear

producer= algae

tertiary consumer = seal

Question 42

Polar bears live in cold, icy, snowy, Arctic conditions. State one way that the polar bear is adapted to its habitat.

Accepted Answer

all of the above

Answer

thick white fur, fat and skin

Answer

big feet for strong claws

Answer

small ears to minimize the coldness in the body

Question 43

The diagram shows a food chain which forms part of an ecosystem.

secondary consumer = ________

decomposer = _____

Accepted Answer

secondary consumer = bluebird

decomposer = fungi

Answer

secondary consumer = snake

decomposer = fungi

Answer

secondary consumer = bluebird

decomposer = grass

Question 44

State one function of a decomposer in a food chain.

Accepted Answer

both a and b are correct

Answer

add nutrients to the soil

Answer

break down and decay bodies of organisms in the food chain

Answer

none of the above

Question 45

Displacement reactions can be used to place metals in a reactivity series. Iron metal is less reactive than zinc metal.

Predict two changes that will take place when a piece of zinc metal is added to a solution of iron sulfate.

Accepted Answer

zinc will displace iron or iron metal is produced

Accepted Answer

zinc sulfate is produced so there is increase in temperature

Answer

zinc will not displace iron

Answer

zinc sulfate is produced so there is decrease in temperature

Question 46

Question 46.

Accepted Answer

the rate of the photosynthesis will decrease and probably increase again in certain time

Answer

the rate of the photosynthesis will increase and probably decrease again in certain time

Answer

no answer

Question 47

The leaves of green plants have evolved and adapted to allow photosynthesis to take place efficiently.

Give all leaf adaptation that helps photosynthesis take place.

Accepted Answer

waxy surface or cuticle

Accepted Answer

lots of stomata

Accepted Answer

large surface area

Accepted Answer

large number of chloroplast

Question 48

The leaves of green plants have evolved and adapted to allow photosynthesis to take place efficiently.

There are some adaptations that helps photosynthesis take place. State how the adaptation helps photosynthesis take place.

Accepted Answer

waxy surface to reduce water loss

Accepted Answer

stomata helps gas exchange

Accepted Answer

large surface area and large number of chloroplasts capture energy and sunlight

Answer

none of the above

Question 49

The diagram shows the arrangement of particles in a solid, a liquid and a gas.

The arrows show the changes of state. Two of the changes of state have been labelled.

Accepted Answer

1 melting

2 condensing

Answer

1 condensing

2 melting

Answer

1 evaporating

2 melting

Answer

1 distillating

2 condensing

PRACTICE FOR PEARSON TRIAL SCI9

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