Final Exam Revision: 1
Quiz by Sharon Barry
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- 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
