Grade 9 Integrated Science 2019 Quiz

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Created on August 02, 2020 By

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G9 Integrated Science 2019

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Which one of the following is not an advantage of satellite communication?

The systems of communication can easily be deployed.

It is flexible as it can provide a variety of communication.

Mobility is easy as communications are able to reach out globally.

Operational costs and installation of satellite systems are affordable

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Analogue signal is best defined as a signal that ....

is obtained from sounds.

is obtained from pictures.

changes in light levels and voltage pulses.

continuously changes in both frequency and amplitude.

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What is the disadvantage of using television as a means of communication?

Television combines sound and pictures.

It has a negative effect on eyesight.

It provides a different form of entertainment.

Television has a limited coverage and less audience.

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Which of the following is not a way of conserving energy?

Planting trees around the house

Reducing the amount of waste we produce

Using mostly charcoal and wood for cooking

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The following is a list of appliances that use electric current:
1 Electric fan
2 Electric cooker
3 Electric shaving machine
4 Electric kettle
5 Electric pressing iron

1, 3, 4

2, 4, 5

2, 3, 4

1, 2, 5

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8 / 38

0.5Ω

1.0Ω

2.0Ω

2.5Ω

9 / 38

A lady wearing a red dress went into a room where there was green light. What
colour will her dress appear?

Black

Green

Red

White

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The diagram shows an object placed between F and 2F.
The image of the object shown in the diagram produced by the lens will be ....

real and inverted.

virtual and inverted.

real and erect.

virtual and erect.

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Study the following equation on a chemical reaction.
Zinc + Hydrochloric acid → Zinc chloride + Hydrogen
This is an example of ....

decomposition.

double replacement.

single replacement.

synthesis.

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Which of the following is an endothermic reaction?

Burning

Electrolysis

Precipitation

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What term is used to describe the process by which plants lose water into the
atmosphere?

Expiration

Inspiration

Respiration

Transpiration

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Which of the following trees is in great danger of extinction due to illegal timber
exploitation?

Masuku

Mubanga

Mukwa

Mulombe

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Chlorine is added to water at a treatment plant in order to ....

filter out small particles.

sediment big solid particles.

kill viruses in the water.

kill bacteria or germs in the water.

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What changes nitrogen back into gaseous state in the nitrogen cycle?.

Denitrifying bacteria.

Lightning.

Nitrogen fixing bacteria in the soil.

Nitrogen fixing bacteria in legumes.

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Which of the following statements is true about gonorrhoea,
syphilis and herpes? They all can be ....

transmitted by virus.

transmitted by bacteria.

treated using antibiotics.

prevented by similar methods.

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Which one of the following is not a mode of transmission of HIV?

Sharing the same bed with an infected person.

Infected mother to child at birth and after birth.

Sharing needles contaminated with fresh blood.

Having sexual contact with an infected person.

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Which of the following components of blood fights disease?

Plasma

Platelets

Red blood cells

White blood cells

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Which of the following is the second most abundant gas in clean air?

Carbon dioxide

Nitrogen

Oxygen

Sulphur dioxide

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23 / 38

mercury expanded.

mercury contracted.

glass tube expanded.

glass tube contracted.

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16.

radiation.

convection.

convection and conduction.

radiation and convection.

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A learner was asked to determine the density of a stone. She made the
following measurements:
1 Volume of water in the measuring cylinder before immersing the stone =
30cm³.
2 Volume of water in the measuring cylinder after immersing stone =
50cm³.
3 Mass of measuring cylinder and 30cm³ of water = 120g.
4 Mass of measuring cylinder, 30cm³ of water and the stone = 170g.
Use the information above to determine the density of the stone. The density of
the stone is ....

1.6g/cm³.

2.5g/cm³.

4.0g/cm³.

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Pure ice was heated to a temperature of 60°C and then cooled to room
temperature. Which row shows the correct state of matter before heating, at
60°C and after cooling?

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Which statement best describes a molecule? A molecule is ....

the smallest particle of an element.

that which occupies space and has weight.

a small group of atoms of elements joined together.

a pure substance that cannot be split into simpler substances.

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1 only

2 only

1 and 3

2 and 3

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What is the name of the process in plants that is negatively affected when oxygen is in limited supply?

Osmosis

Respiration

Photosynthesis

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Which of the following is not an effect of air pollution? It causes ....

unpleasant smell.

difficulties in breathing.

lung and heart diseases.

death of aquatic animals.

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1 and 2.

2 and 3.

5 and 6.

1 and 4.

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Which of the following does not describe the importance of the children’s clinic?

Immunisation of the child against diseases

Growth monitoring through weighing the child

Monitoring if the child will have learning difficulties as it grows

Provision of nutritional advice when there are signs of malnutrition

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The deficiency disease caused by lack of vitamin D in the diet resulting in soft and
weak bone development is ....

kwashiorkor.

marasmus.

rickets.

scurvy.

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Which of the following best describes the function of the placenta?

Transports food nutrients and oxygen to the embryo.

Protects the embryo against external shocks.

Allows implantation of zygote and embryo development.

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fertilisation.

gestation.

implantation.

ovulation.

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Which of the following is not a good health habit?

Washing the reproductive organs regularly with soap and clean water.

Changing sanitary towels regularly during menstruation.

Keeping the reproductive organs damp or wet.

Changing underwear regularly and ironing them before wearing.

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The average score is 36%