Chapter 3 Temperature

Question 1

Absolute zero

Answer 1

when there is no heat, can be extracted from a body state
It is the min temp which is same for all the substances

Question 2

What is the value for Absolute zero

Answer 2

1 k

Question 3

C° to F
F to C
C to K

Answer 3

(9/5 ×C ) +32
(F - 32) × 5/9
C + 273

Question 4

What temp is same for both the C and F

Answer 4

-40 and -40

Question 5

Instrument for measuring temperature

Answer 5

Dry bulb thermometer
WET bulb
Minimum thermometer alcohol for small changes
Bi metallic strips for upper lvl temp

Question 6

Surface temperature

Answer 6

Its is recorded 4 ft above the ground in shade (1.25m)

Question 7

Ambient temperature

Answer 7

It is the temperature of the surroundings

Question 8

Virtual temperature

Answer 8

Its it when both dry and moist air have the same px and density

Question 9

What is the sum of total KE

Answer 9

Heat

Question 10

What is the avg KE

Answer 10

Temperature

Question 11

Specific heat

Answer 11

It is the amount of heat required for a substance to increase its temp by 1°C

Question 12

Latent heat

Answer 12

It is the amount of heat which is released or absorbed during change of one state to another like solid to liquid and etc

Question 13

Conduction

Answer 13

It is the transfer of heat with direct contact with source (stove and pan )

Question 14

Convection

Answer 14

‌tranfer of indirect heat of source
‌ Free convection- solar energy
‌forced convertion - Topography

Question 15

Radiation

Answer 15

In this process no medium is required or affected like sun heating the earth but not affecting the atmosphere

Question 16

Advection

Answer 16

It is the transfer of heat horizontally by winds

Question 17

Irregular Eddie motion of the atmosphere

Answer 17

Turbulence

Question 18

What type of heat process happens in troposphere and stratosphere

Answer 18

All heat transfer process but in stratosphere only radiation happens like there is not convection and latent heat

Question 19

INSOLATION and how it is max
It is max overwhich area of earth

Answer 19

It is the amount of solar radiation received by a particular area
It is max when it is overhead and less in sunrise and sunset
Max over the tropics ,max between Cancer and Capricorn

Question 20

What is a black body

Answer 20

A radiating body is called black body

Question 21

Stephen boltz law

Answer 21

E is directly proportional to T⁴

Question 22

Wien law

Answer 22

Heat is inversely proportional to wavelength so
More heat short wavelength and less heat long wavelength

Question 23

Solar radiation consists of

Answer 23

Ir which is 46%
Visible light is 45%
UV is 9%

Question 24

Terrestrial radiation

Answer 24

The earth radiates heat and loose it ,it is long wave radiation so it gets heated by Short waves and looses heat as long waves ,it is mostly IR

Question 25

Nocturnal radiation

Answer 25

It is when the earth looses heat in the night with the absence of short wave radiation

Question 26

Heat budget of earth

Answer 26

30% is reflected back 19% is absorbed by atmosphere 51% is absorbed by Earth surface

Question 27

What is the ability of a body to reflect back the radiation

Answer 27

Albedo

Question 29

What happens is the weather is clear in heat budget

Answer 29

5/6 of the radiation is absorbed by Earth and 10% is reflected back

Question 30

What surface reflects the maximum

Answer 30

Snow by 80%

Question 31

Diurual variation of surface temperature for land and sea

Answer 31

Sea it is low which is 1°c and land avg is 20°c Land heats and cools fast than sea

Question 32

Near the coast area the diurual variation depends on

Answer 32

Direction of wind

Question 33

When is the diurual variation maximum

Answer 33

When the wind is calm

Question 34

What happens when there is a temperature change on the surface

Answer 34

A frictional layer is formed from 1km above the ground

Question 35

When does the min temp occurs

Answer 35

Half and hour to one hour after sunrise

Question 36

Effect of clouds on surface temperature

Answer 36

Cloudy nights the surface will be warmer and clear sky nights the surface will be cooler