CAPE Physics Unit 1 · 2008 (Rest of Region) · Paper 1 · Question Q37
Which statement BEST explains the occurrence of convection currents?
- (A)Hot molecules exert greater forces than cold ones.
- (B)Brownian motion causes fluids to be in constant motion.
- (C)Heat decreases the density of fluids through expansion so they must rise.
- (D)The movement of bubbles due to the process of boiling.
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