Question 20
Question 20 of 40
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No letter options?
Older MCQs might not have the typical A, B, C, D choices. They have choices 1, 2, 3, and a combination of them is the answer. Below is the key that maps such combinations to the answer.
A 1, 2 and 3 are correct
B 1 and 2 only are correct
C 2 and 3 only are correct
D 1 only is correct
Topics Tested
2. Thermal physics
2.2.1. Thermal expansion of solids,...

Explain, in terms of the motion and arrangement of particles, the thermal expansion of solids, liquids and gases, and state the relative order of magnitudes of the expansion of solids, liquids and gases

2. Thermal physics
2.3.2. Convection

Explain convection in liquids and gases in terms of density changes and describe experiments to illustrate convection

1. Motion, forces and ene...
1.8. Pressure

State that the pressure at a surface produces a force in a direction at right angles to the surface and describe an experiment to show this