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SUBJECT ENRICHMENT_TERM_2_8A_attempt_3

Total questions: 20

Worksheet time: 12mins

Name
Class
Date
1.
What are 2 factors that determine the amount of friction between 2 objects?
a)
Force and roughness between surfaces
b)
hills and valleys and how smooth or rough the surface is
c)
Amount of force and amount of surface the comes in contact
d)
The force and the weight exerted on the surfaces
2.

Which of the following does not conduct electricity?

a)

Sugar solution

b)

 Vinegar solution

c)

Lemon juice solution

d)

Caustic soda solution

3.
Which of the following statements is incorrect about the conductivity of water?
a)
Rain water is a good conductor of electricity.
b)
On addition of table salt, water conducts electricity.
c)
On addition of lemon juice, water conducts electricity.
d)
Water becomes a good conductor of electricity when heated.
4.

Small amount of a mineral salt present naturally in water makes it a______________ of electricity.

a)

insulator

b)

conductor

c)

both a and b

d)

none of these

5.

Name the scientist who showed that lightening and spark from our clothes are essentially the same phenomenon ?

a)

Thomas Alva Edison

b)

Franklin D. Roosevelt

c)

Issac Newton

d)

Benjamin Franklin

6.

Identify the figure which is not suitable during thunder storms

a)
b)
c)
7.

What is a Tsunami?

a)

Is an enormous wave produced by ripples caused by undersea earthquakes or volcanic eruptions.

b)

Is a storm distinguished by strong winds.

c)

a swirling column of wind.

d)

is a big of water

8.

Front balged part of the eyeball is called

a)

PUPIL

b)

CORNEA

c)

RETINA

d)

IRIS

9.

When we stand in front of our dressing table, our left hand seems to be right and right seems to be left. This is called

a)

mirage

b)

Up -side down phenomenon

c)

Left-right confusion

d)

Lateral inversion

10.

If you are standing 2m away from a plane mirror the distance between you and your image are

a)

2m

b)

4m

c)

6m

d)

8m

11.

How would the planets move if the Sun disappeared?

a)

The planet would stop moving because gravity is no longer affecting it.

b)

The planet would move for a little while longer, but then stop.

c)

The planet would move in a straight line in the direction it had been traveling, because of its inertia.

d)

The planet would stop moving, but then start moving again because it would attach to another celestial object or planet.

12.

What does the Earth, Moon and Saturn have in common?

a)

The Sun revolves around them.

b)

Saturn orbits the Earth, and at the same time, the Moon revolves around the Earth.

c)

They all revolve in elliptical orbital paths around the Sun due to gravity.

d)

They all have life on them.

13.

Morning star is the name given to

a)

pole star

b)

planet Jupiter

c)

star Sirius

d)

planet Venus

14.

how many earth years does it take Jupiter to orbit the sun

a)

58

b)

12

c)

23

d)

29

15.

Which of the following is NOT a greenhouse gas

a)

Carbon Dioxide

b)

Carbon Monoxide

c)

Nitrogen

d)

Methane

16.

Which of the following is an objective of the Ganga Action Plan?

a)

Separate contaminated from uncontaminated water

b)

Production of hydrogen for energy generation

c)

Monitor the throwing of unburnt and half-burnt bodies into the river

d)

Support of bathing and washing in the river

17.

How is pH level influenced by nitrates?

a)

If the pH level is too high, then the nitrates become acidic.

b)

If the pH level is too high, then the nitrates disappear from the water supply.

c)

If the nitrate levels are too high, then algae grows, which leads to unhealthy pH levels.

d)

If the nitrate levels are too low, then algae disappears, which leads to unhealthy pH levels.

18.
If an object is not moving the forces acting upon it are _____________
a)
unbalanced
b)
weak
c)
balanced
d)
Hulk Smash!
19.

When you increase your depth under water, the water pressure on your body

a)

increases

b)

decreases

c)

stays the same

20.

Watch the tyres of tractor rolling. Rear tyres are broader because

a)

It looks good.

b)

Broader tyres lessen the muscular Force required.

c)

Broader tyres lessen the pressure on ground.

d)

Broader tyres lessen the friction on ground.