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WorksheetsG12 Physics (S2M1)
Total questions: 21
Worksheet time: 22mins
Below are four statements about evaporation. One of them is correct.
Which statement is correct?
Evaporation cannot occur if a liquid's temperature is too low.
Evaporation happens equally, In all directions, from all parts of a liquid.
Evaporation cannot occur if a liquid is very dense
Evaporation causes the temperature of the evaporating liquid to decrease
A popular demonstration of kinetic theory is to view smoke particles through a microscope, while illuminating them with a bright light.
The diagram shows the view of the smoke particles through a microscope. they are moving about randomly.
What causes the motion of the smoke particles?
The smoke particles are attracted to each other
The smoke particles vibrate because they are warm.
Smaller air particles are colliding with the smoke particles.
The microscope is vibrating slightly, making the smoke particles appear to move.
In a children's experiment, a saucer of water is left outside to evaporate. Which row shows weather conditions that will each cause the rate of evaporation from the saucer to increase?
A
B
C
D
Air is trapped inside a cylinder. The volume of the cylinder cannot change.
The Temperature of the air is increased.
Which of the graphs below shows the correct relationship between pressure and temperature?
A
B
C
D
The diagram shows four water molecules in a swimming pool. it also shows how much energy molecule has.
Which of the water molecules is most likely to evaporate from the liquid?
Molecule A
Molecule B
Molecule C
Molecule D
A beaker of water, at its boiling point of 1000C, is heated so that the liquid starts to become a gas, also at 1000C.
Which row of the table correctly compares the liquid phase with the gas phase under these conditions.
A
B
C
D
A sealed yet empty (except for air) plastic drinks bottle is left outside in the sunshine on a warm day.
Which row of the table correctly describes what happens to the average speed of the air molecules, and to the pressure inside the bottle?
A
B
C
D
A syringe is half filled with air and sealed. the plunger is then pulled outwards, causing the volume of the gas to increase.
This is done slowly, so that the expansion happens at a constant temperature.
What happens to the pressure of the gas, and to the speed of the air molecules?
A
B
C
D
A sealed piston is used to expand a gas. No gas escapes during the process.
What happens to both the density of the gas and to its pressure when it is expanded in this way?
density stays the same; pressure stays the same
density increases ; pressure decreases
density decreases; pressure stays the same
density decreases; pressure decreases
A substance is cooled. The graph below shows how its temperature changes over time.
What is happening in the portion of the graph labelled XY?
The gas is cooling.
The liquid is freezing.
The gas is condensing.
The liquid is cooling.
What are the upper and lower fixed points on a Celsius scale thermometer?
A
B
C
D
Two cylinders, P and Q, are heated using an electric heater. Both of the cylinders receive exactly the same amount of thermal energy.
The temperature of P increases by a smaller amount than the temperature of Q.
What conclusion can be drawn?
P is a better thermal conductor.
Q is a better thermal conductor
P has a higher thermal capacity
Q has a higher thermal capacity
Which of the following statements defines the specific heat capacity of a substance?
The energy required to raise the temperature of 1 kg of a substance by 10C
The energy per 10C required to raise the temperature of a substance.
The increase in length of 1 Kg of a substance when its temperature is increased by 10C.
The energy required to change 1 kg of a substance from a liquid to a gas.
Wooden barrels are often reinforced by putting tight iron rings around them.
What properties would make it easier to get the iron ring onto the barrel?
Heating the barrel.
Cooling the iron ring.
Soaking the barrel in water.
Heating the iron ring.
A laboratory liquid-in-glass thermometer is shown in the diagram below.
A manufacturer wants to make a more sensitive thermometer than the one shown. What could be done to achieve this?
Write the numbers closer together on the thermometer
Increase the length of the stem and the tube within it.
Increase the diameter of the tube which contains the liquid.
Increase the volume of liquid in the thermometer, and increase the volume of the glass bulb.
A substance, which is initially in its solid form, is heated at a constant rate.
The graph shows how its temperature changes with time.
Between which points is the substance partly a liquid and partly a gas?
V and W
W and X
X and Y
Y and Z
A National Grid engineer connects an electrical cable between two pylons.
The cable is a bit too tight.
What could happen to the wire if the weather became very cold, and why?
The wire sags low because it expands.
The wire breaks because it contracts
The wire breaks because it becomes brittle
The wire's resistance increases because it contracts.
An object is placed in front of a mirror. Where is the imaged formed, and is the image real or virtual?
X - real
Y - virtual
Y - real
Y - virtual
Which of the diagram below shows both the correct position of the image, and the correct path the light rays must have taken to the eye?
A
B
C
D
Which of the images correctly shows the focal length of the thin converging lens?
A
B
C
D
The diagram shows light passing from air into glass. A number of angles have been labelled on the diagram.
Which of the equations could be used to correctly calculate the refractive index, n, of the glass?
sin P/sin S
sin Q/sin R
sin P/sin R
sin Q/sin S
