3rd Class Science Weather, Air and Water Question Bank Air, Water and Weather

Read the data given below and answer questions 8 and 9. Jasmine conducted an experiment. She took two bowls of sand and water and placed them in sunlight. After an hour she noted the temperatures. Then she took both into her house and placed them where there was no light. She noted the temperatures again after one hour and made the following observations.

Sand Water

Before placing them in sunlight \[{{30}^{o}}C\] \[{{30}^{o}}C\]

After placing them in sunlight for an hour \[{{36}^{o}}C\] \[{{33}^{o}}C\]

After placing inside the house for one hour \[{{31}^{o}}C\] \[{{31}^{o}}C\]

What is the increase in the temperature of the sand after being placed for an hour in the sunlight?

A) \[{{30}^{o}}C\]

B) \[{{36}^{o}}C\]

C) \[{{6}^{o}}C\]

D)      \[{{3}^{o}}C\]

Correct Answer: C

Solution :

There is an increase of \[{{6}^{o}}C\] in the temperature of the sand after being placed for an hour in sunlight,

	Sand	Water
Before placing them in sunlight	\[{{30}^{o}}C\]	\[{{30}^{o}}C\]
After placing them in sunlight for an hour	\[{{36}^{o}}C\]	\[{{33}^{o}}C\]
After placing inside the house for one hour	\[{{31}^{o}}C\]	\[{{31}^{o}}C\]