If gear (2) moves clockwise, then which of the following directions will be similar to the direction of gear (4)?
Correct answer: A. Direction of (2) and (5)
- A. Direction of (2) and (5)
- B. Direction of (1) and (2)
- C. Direction of (1), (3) and (5)
- D. Direction of (1), (2) and (5)
Explanation
When gear (2) moves clockwise, gear (3) will move counterclockwise, and gear (4) will move clockwise again, matching the direction of gear (2). Finally, gear (5) will also rotate clockwise if it is connected to gear (4). Thus, gear (4) rotates in the same direction as gears (2) and (5). The other options are incorrect because they involve gears that rotate in the opposite direction or include gears that are not in sync with gear (4).
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Scientific reasoning evaluates hypotheses through observations, variables, controls, measurements and experimental results. Questions involve identifying independent and dependent variables, recognising a fair test, interpreting tables or graphs, distinguishing evidence from opinion, and deciding whether data supports, rejects or leaves a hypothesis unresolved.
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