Why can the sun's heat not reach the earth by conduction or convection?

Important Questions on Heat

HARD

7th CBSE

IMPORTANT

AWARENESS SCIENCE for Seventh Class>Chapter 4 - Heat>Long Answer Type Questions>Q 46

Explain how woollen clothes keep us warm during cold winter days. Discuss why wearing more layers of clothing during winter keeps us warmer than wearing just one thick piece of clothing.

EASY

7th CBSE

IMPORTANT

AWARENESS SCIENCE for Seventh Class>Chapter 4 - Heat>Long Answer Type Questions>Q 47

What is a clinical thermometer? What is the range of a clinical thermometer? Explain why a clinical thermometer cannot be used to measure high temperatures.

HARD

7th CBSE

IMPORTANT

AWARENESS SCIENCE for Seventh Class>Chapter 4 - Heat>Long Answer Type Questions>Q 48

Explain how, the water in a beaker gets heated when a burner is kept below it. Draw a labelled diagram to illustrate your answer.

HARD

7th CBSE

IMPORTANT

AWARENESS SCIENCE for Seventh Class>Chapter 4 - Heat>Long Answer Type Questions>Q 49

Explain how all the air in a room gets heated when a room heater kept on the floor in a corner of the room is switched on. Draw a labelled diagram to illustrate your answer.

MEDIUM

7th CBSE

IMPORTANT

AWARENESS SCIENCE for Seventh Class>Chapter 4 - Heat>Long Answer Type Questions>Q 50

Describe the blowing of sea-breeze and land-breeze in coastal areas with the help of labelled diagrams.

EASY

7th CBSE

IMPORTANT

AWARENESS SCIENCE for Seventh Class>Chapter 4 - Heat>Long Answer Type Questions>Q 51

Why do people prefer to wear white clothes in summer?

EASY

7th CBSE