A black car gets hotter than a silver car on a sunny day, because

• Black attracts heat radiation

• Black emits heat radiation

• Black absorbs heat radiation

• Black absorbs ultra-violet radiation

The smell of perfume travels across a room by

• Diffraction

• Diffusion

• Dispersion

• Defection

Which of the following quantities is not measured in the same units as the other three?

• Work

• Power

• Kinetic Energy

• Heat

Some gas is in a vessel at a temperature of -34°C. Its absolute temperature is

• 34K

• -34K

• 239K

• 307K

Which of the following is true for all series circuits?

• Current and voltage are always proportional

• Current always goes down as you get further from the power supply

• The voltage is the same across each component

• The voltages across the components add up to the voltage across the power-supply

A space shuttle has weight of 20,000N. If it is climbing at a steady speed, the upward force on it must be

• More than 20,000N

• Equal to 20,000N

• Less than 20,000N but more than zero

• Zero

A white dwarf always has

• a higher mass than our Sun

• a higher density than our Sun

• a lower temperature than our Sun

• a lower helium concentration than our Sun

The radiation from a radioactive source is all stopped by 1cm of aluminium.

Which of the following is definitely true from this observation?

• It is not emitting any gamma rays

• It is not emitting any alpha particles

• It is only emitting beta particles

• It is only emitting gamma rays

In order to measure the power used by a lamp, which is the smallest suitable list of instruments?

• Joulemeter, ammeter, voltmeter, ohm-meter, stopclock

• Joulemeter, ammeter, voltmeter, stopclock

• Joulemeter, ammeter, voltmeter

• Ammeter, voltmeter

An neutron beam can be deflected by

• An electric field

• A magnetic field

• A gravitational field

• Ultra-violet radiation