Physics - Study Mode

[#836] Sun's heat reaches us by
Correct Answer

(C) Radiation

Explanation

Solution: Sun's heat reaches us by radiation.

[#837] Land is considered a resource because it
Correct Answer

(A) Is used to produce things

Explanation

Solution: Land is considered an important resource because it can be used for various purposes like agriculture, forestry, mining, building houses, roads and setting up of industries. It also serves as a habitat for a variety of flora and fauna.

[#838] What is the source of energy for the water cycle?
Correct Answer

(B) Sun

Explanation

Solution: The sun is what makes the water cycle work. The sun provides what almost everything on Earth needs to go—energy, or heat.

[#839] Which of the following is a non renewable source of energy ?
Correct Answer

(D) Coal

Explanation

Solution: Coal is a non renewable source of energy.

[#840] Which resource is both renewable and inexpensive?
Correct Answer

(A) Sunlight

Explanation

Solution: Sunlight is the both renewable and inexpensive resource from the given options.