Single correct option
Consider the following statements.
1. Heat from the Sun reaches the Earth mainly by conduction.
2. Land and sea breezes are caused by convection currents.
Which of the statements given above is/are correct?
1. Heat from the Sun reaches the Earth mainly by conduction.
2. Land and sea breezes are caused by convection currents.
Which of the statements given above is/are correct?
- A. 1 only
- B. 2 only
- C. Both 1 and 2
- D. Neither 1 nor 2
Show answer and solution
Answer: (B) 2 only
Space between the Sun and Earth is nearly vacuum, so heat cannot travel by conduction or convection, which need a medium; it arrives by radiation. Statement 1 is wrong. Land and sea breezes form because air above land and sea heats unequally, creating convection currents in the air, so statement 2 is correct.
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