APDL Eductation Resources/APDL Eductation Resources.iso/programs/games/quiz/mc_phys/Tests_2/Mixture5

Text File | 1994-09-05 | 3.4 KB | 132 lines

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

@Bridges are sometimes built with one end on a roller because:
Hot weather makes them expand
Strong winds cause them to move
They do not have to be made so accurately

@Which form of radiation has no charge?
Gamma
Alpha
Beta

@What is the unit used to measure the work done by a force?
Joule
Watt
Newton

@How many colours are there in the spectrum?
Seven
Eight
Six

@Which one of the following statements is NOT correct?
E.m waves travel very slowly
E.m waves all travel at the same speed in space
E.m waves all have different wavelengths

@Clear glass is:
Transparent
Opaque
Translucent

@Which lens would be found in glasses worn by someone who is shortsighted?
#lens2
Lens z
Lens y
Lens x

@Ships use pulses of sound (sonar) to find the depth of water below them. The system used is:
Sending a pulse and timing how long it takes to return
Sending several pulses and seeing how many return
Gradually sending weaker pulses until they can just be detected

@A diode contains which of the following?
An anode and a cathode
An anode only
A base, collector and emitter

@Electrical power is sent around the country by the National Grid. Very high voltages are used because:
energy losses are kept to a minimum
high currents need to be generated
large distances have to be covered

@Two strips are brought together, and the strip hung on string moves away from the other strip. This shows:
#rod
the rods must have the same charge on them
the rods have opposite charges
neither rod has a charge

@Metals are good conductors because they:
have many free moving electrons
their atoms can vibrate
they are strong

@An oscilloscope trace can be pulled left or right by applying a p.d to:
X-plates
Y-plates
Grid

@What does the Law Of Conservation Of Energy say?
Only the form of energy can be changed
Energy can be created and destroyed
Energy can only be created

@What is the name of the acceleration force that keeps us on the ground?
Gravity
Electrostatic
Air resistance

@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

@Shoes with stiletto heels are more likely to damage a wooden floor because:
the heel point exerts a high pressure
frictional forces are increased
the person walking is not stable and wobbles slightly

@When forces balance exactly this is called:
Equilibrium
Reaction
Inertia

@Which one of the following is a vector?
Momentum
Time
Power

@A metal radiator feels warm when you touch it. This is due to:
Conduction
Convection
Radiation

@A burn from steam is worse than a burn from boiling water because:
The temperature of steam can be more than 100°C
Steam is a gas
Steam molecules move more slowly

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

@Petrol has a density of 0.80 g/cm³. What would be the volume of 1kg of petrol?
1250 cm³
0.80 cm³
800 cm³

@If you try and squeeze a solid, such as stone, you  have little effect. This is because:
repulsive forces within the substance act
hydrogen bonding takes place
molecules of the substance 'flow' over each other, absorbing the force

@Which combination of colours is in the correct order for a spectrum?
Orange, yellow, green and blue
Red, yellow, green and violet
Yellow, orange, blue and violet