Question

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Answer 1

Explanation:

1.True

2.false

3.True

4.True

5.True

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Answer 2

1. Convection current causes land breeze and sea breeze true

2. When a substance is heated its density increases false

3. A substance which floats in one liquid may sink in another liquid true

4. The relative density multiplied by thousand gives the the density in CGS unit false

5. Hot fluid rises and cold fluid settles down this leads to convection current true

Explanation:

• Due to different rate of heating and cooling of air there is difference of the air pressure on the surface of the land.

• Air that is heated gets expanded and as a result of this the pressure decreases. The reverse is true for cooling of the air.

• The air moves from the region of higher pressure to the region of lower pressure. This results in the formation of convection currents.

To know more about Convection current,

What sets the convection current in water? - Brainly.in

brainly.in/question/4388278