Judge the following sentences according to the criteria given below. Ice cubes are dropped in a glass of warm water and float to the top. The ice cubes rose to the top of the glass of warm water because the frozen ice is colder than the warm water
A) The assertion is correct but the reason is incorrect.
B) The assertion is incorrect but the reason is correct.
C) The assertion and the reason are both correct, and the reason is valid.
D) The assertion and the reason are both correct, but the reason is invalid.
E) Both the assertion and the reason are incorrect.
Answer: D
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The UNHCR (United Nations High Commission for Refugees) identified 3 groups forced to migrate for political reasons. Who are they?
A) refugees, IDPs, asylum seekers B) refugees, political prisoners, those displaced by earthquakes and tsunamis C) asylum seekers, guest workers, IDPs D) IDPs, refugees, indigenous persons E) refugees, political exiles, indigenous persons
What is the relationship between average stream velocity, stream roughness and stream gradient?
A. As average stream velocity increases, roughness and gradient decrease. B. As average stream velocity increases, roughness and gradient increase. C. As average stream velocity increases, roughness decreases and gradient increases. D. As average stream velocity increases, roughness increases and gradient decreases.
Air pressure is due to the
A) weight of water vapor in the air. B) weight of overlying air. C) force of the wind. D) speed of the wind.
If pressure gradient was the only force acting on the air, it would move in a curved path
Indicate whether the statement is true or false