Physics Revision Quiz 1

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

• Deflection

Match the following units with the type of physical quantity they measure:

• Watts (W)

• Heat

• Joules (J)

• Kinetic energy

• Joules (J)

• Power

• Joules (J)

• Work

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

The energy-resource which is not a fossil fuel is

• Natural gas

• Biomass

• Coal

• Petroleum

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

Dust sticks to an old TV screen which has been switched on, because

• The screen becomes charged and charged objects attract uncharged objects

• The screen and the dust are oppositely-charged

• There is a vacuum behind the TV screen so atmospheric pressure pushes the dust onto it

• The electron beams in the TV produce a magnetic field