@Two, thin, tubes are placed in water as shown. After a few days, what will be seen?
#capil
The water in the smaller tube will have risen more than the larger tube
No change
Water in the larger tube will have risen much more than the smaller one

@Which form of radiation also has a negative charge?
Beta
Alpha
Gamma

@Which unit is used to measure energy?
Joule
Watt
Coulomb

@White light, passing through a prism, emerges as colours of the spectrum. This is because:
the colours of the spectrum are slowed down and 'bent' by different amounts
interference effects cause small amounts of white light to change to different colours
the white light causes the prism to produce colours of the spectrum

@When two sets of waves meet each other what happens?
They interfere with each other
Neither of them is affected in any way
Both sets of waves are always totally destroyed

@A person who is longsighted:
can see distant objects clearly
can see near object clearly
can't see any kind of objects clearly

@What is ultra-sonic sound?
Sound waves of a very high frequency
Very quick moving sound waves
Long wavelength sound waves

@If a resistance is put into a circuit then the overall current flowing is:
Reduced
Just the same
Increased

@If a current flows through a thin wire, which of the following effects are produced?
Heat & a magnetic effect
A magnetic field
Heat

@Electricity is a movement of:
Electrons
Neutrons
Protons only

@What current flows if 30 coulombs of charge are moved in 10s?
3 A
30 A
300 A

@The diagram shows the trace on an oscilloscope. The time base was:
#scope1
turned on
turned off
doesn't make any difference whether its turned on or off

@How many kilowatts is 2500 watts?
2.5
25.0
0.25

@Acceleration is a vector quantity because:
it depends on the direction you are going
the size (value) of the acceleration is important
because its units are m/s

@Weight is different to mass because:
it changes but mass doesn't
it remains constant no matter where you are
it does not depend on gravity

@A car travels at 50 kph. How far has it travelled after 4.5 hours
225 km
11.11 km
0.09 km

@The diagram shows a container of water with a hole. The distance the water is going is L. If you wanted L to remain constant you would have to:
#pre4
Keep the water level in the container the same
Make another hole in the container
Completely fill the container

@Which one of the following is a scalar?
Energy
Gravity
Weight

@Heat is transmitted from the Sun to the Earth by:
Radiation
Convection
Diffusion

@A fridge works on the principle of:
Evaporation
Convection
Sublimation

@A thermometer works because liquids:
Expand when they are heated
Change to a gas when heated
Turn to a solid when heated

@10 cm of glass has a mass of 25g. What is the density of glass?
2.5 g/cm
250 g/cm
0.4 g/cm

@Pressure is measured in Pascals (Pa), but what else could it be measured in
N/m
N/kg
kg/m

@Which form of radiation also has a positive charge?
Alpha
Beta
Gamma

@Why does an object appear black in white light?
Because it absorbs all light
Because it reflects all light
Because it only reflects red and blue
