Question

Please answer all the questions.

Note :-

1. Quality answer needed.
2. Spammers will be reported.​

Answer 1

1.

a. thermal(not sure)

b.temperature

c. metals with zinc

d. light

e. conductors

f. energy

g. dont know

h. Mercury, not sure about second

i. dont know

j. conducting, insulating

2.

1. b

2.d

3. c

4.e

5.a

not sure about this question

3.

1. true

2. true

3. false

4. false (not sure)

5. true

Answer 2

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Q1) Fill in the blanks

(i) Radiation heats travels in a straight line.

(ii) Thermometer is used to measure temperature.

(iii) Galvanization is the process of coating zinc on iron.

(iv) Light coloured bodies are good absorbers of heat.

(v) Substances which allow heat to pass through them are Conductors.

(vi) Heat is a form of energy.

(vii) The process of radiation is called wave.

(viii) The liquid used in thermometer can be Mercury.

(xi) The lower fixed point on the Celcius scale of temperature is 0°c.

(x) Heat cannot flow from a one body to a other body.

Q2) Match the items in Column A with items in Column B.

Column A

(1) Insulator

(2) Convection

(3) Good Conductor

(4) Thermos Flask

(5) Insulator

Column B

(a) Solar Cooker

(b) Ebonite

(c) Aluminium

(d) Heat Convector

(e) No transfer of heat radiation

Answer :

(1) - (b)

(2) - (d)

(3) - (c)

(4) - (e)

(5) - (a)

Q3) True or False

(1) A fitted metal screw will loosen on heating. True

(2) Hotter body transfers heat to a cooler place. True.

(3) Places near the sea receive a sea breeze during the day time. True

(4) Heat cannot travel without a medium. False

(5) Convection takes place only in liquids. True