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- @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
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- @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/s²
-
- @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 cm³ of glass has a mass of 25g. What is the density of glass?
- 2.5 g/cm³
- 250 g/cm³
- 0.4 g/cm³
-
- @Pressure is measured in Pascals (Pa), but what else could it be measured in
- N/m²
- 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
-