Worksheets9C 2nd Midterm Review 23
Total questions: 11
Worksheet time: 6mins
A gas is stored in a sealed container of constant volume. The temperature of the gas increases. This causes the pressure of the gas to increase. What happens to the gas molecules during this pressure increase?
The average kinetic energy of the molecules increases.
The average separation of the molecules decreases.
The average separation of the molecules increases.
The volume of each molecule increases.
A
B
C
D
A
B
C
D
A
B
C
D
A wooden wheel can be strengthened by putting a tight circle of iron around it.
Which action would make it easier to fit the circle over the wood?
cooling the iron circle
heating the iron circle
heating the wooden wheel and cooling the iron circle
heating the wooden wheel but not heating or cooling the iron circle
The diagram shows the shape of the bimetallic strip before and after heating.
Which statement is correct?
Metal P expands more than metal Q on heating.
Metal P contracts more than metal Q on heating.
Metal Q expands more than metal P on heating.
Metal Q contracts more than metal P on heating.
The diagram shows a liquid-in-glass thermometer. Which change to the design would result in a more sensitive thermometer?
Increase the density of the liquid.
Increase the diameter of the capillary tube.
Increase the number of scale markings.
Increase the volume of the bulb.
A block of metal absorbs 2000 J of thermal energy. The temperature of the block rises from 10 °C to 20 °C. The mass of the block is 2.0 kg. What is the specific heat capacity of the metal?
50 J / (kg °C)
100 J / (kg °C)
200 J / (kg °C)
400 J / (kg °C)
Two plastic cups are placed one inside the other. A small spacer keeps the two cups separated. Hot water is poured into the inner cup and a lid is put on top, as shown. Which statement is correct?
The bench is heated by convection from the bottom of the outer cup
The lid reduces the energy lost by convection
There is no thermal conduction through the sides of either cup
Thermal radiation is prevented by the small air gap
A solid is heated from room temperature. The graph shows how its temperature changes with time as it is heated constantly. At which time has it just become completely liquid?
A
B
C
D
The diagram shows a vacuum flask used to keep liquid hot. How does thermal energy pass through the vacuum?
conduction only
convection only
radiation only
conduction and convection
