# Final Exam Revision: 1

## Quiz by Sharon Barry

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20 questions
• Q1

The following statements are all true of frictional force, except:

It increases on smooth surfaces.

the rougher the surface, the greater the force.

It opposes motion.

It is a contact force.

30s
• Q2

Thabo has a mass of 58kg. Pluto has a gravitational force of 0,62. His weight on Pluto will be:

58kg

35,96N

58,62N

58N

30s
• Q3

A  circuit consists of 2 cells in series, a bulb, an Ammeter, and a switch. Select the correct statement:

The flow of charge provides potential energy

The 2 cells connected together form a battery

A current will only flow if the switch is open

The cells provide kinetic energy to the circuit

30s
• Q4

In the circuit diagram below, the direction of current flow will be:

Clockwise

From negative to positive

Anticlockwise

No current will flow - the switch is open

30s
• Q5

The follow statement is true regarding the voltmeters in the circuit below:

V1 = V3 - V2

It must always be connected in series

V1 = V2 + V3

V1 = V2 = V3

30s
• Q6

Household circuits are connected in parallel. The disadvantage of this is______

People will forget to switch their lights off and will waste electricity

Too many conductors connected to one source could be dangerous and cause a fire.

Bulbs will tend to fuse more frequently.

The resistance will be high and use a lot of electricity.

30s
• Q7

The circuit diagram below represents:

two bulbs in parallel

a short circuit

an open circuit

a series circuit

30s
• Q8

An example of a renewable energy source is

natural gas

wind

coal

uranium U-235.

30s
• Q9

A bulb is rated with a power of 60W. The cost of a unit of electricity is 211c. The units of electrical energy consumed by the bulb in 6 hours will be:

3.60 units

360 units

36 units

0.36 units

30s
• Q10

The third planet from the sun is:

Mars

Earth

Jupiter

Venus

30s
• Q11

The earth’s crust and the uppermost part of the mantle together form the …

Oceanic crust

Atmosphere

Lithosphere.

Troposphere

30s
• Q12

The main metallic minerals mined in South Africa are

Gold, copper, quartz and uranium

Gold, diamonds and coal

Gold, copper, platinum, and iron.

Diamonds and quartz.

30s
• Q13

Positive impacts of mining in South Africa include

Job creation and economic growth.

Organized labour strike actions

Health and safety risks

Exploitation by foreign companies

30s
• Q14

Which of the following gases is a greenhouse gas?

Neon

Oxygen

Hydrogen

Methane

30s
• Q15

The atmospheric layer in which weather occurs is the:

Troposphere

Tectonic plates

Stratosphere

Hydrosphere

30s

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