Question

please give right answer it's for exam ​

Answer 1

$\LARGE{ \underline{\underline{\blue{ \sf{Required \: answer:}}}}}$

Here are the answers of fill in the blanks:

1) The laboratory thermometer is marked from -10°C to 110°C.

• It is also known as Lab thermometer which is used to measure the boiling points, melting points, temperature of a substance in the laboratories.

2) Ocean currents are caused due to wind (especially)

• There are several other reasons of ocean currents like difference in density due to temperature, gravity natural disasters like earthquakes, storms etc.

3) Physical contact is necessary for transfer of heat by conduction.

• Conduction is generally seen in case of solids where the molecules are adjacent to each other and heat is transferred through physical contact between them.

4) Plastic is a/an insulator of heat.

• Plastic is a bad conductor of heat and electricity. Due to this, it is used in insulating wires and electrical appliances.

5) Most of the heat from the sun thay falls on Earth's surface is radiated back.

• The atmosphere absorbs a lot of energy from the sun which is radiated back to balance the total temperature of earth.

Answer 2

Answer:

1) The laboratory thermometer is marked from -10°C to 110°C

Differences :

• The temperature range of clinical thermometers is 35°C-42°C and that of laboratory thermometers is -10°C-110°C.

2) Ocean currents are caused due to wind

• Ocean currents can be caused by wind, density differences in water masses caused by temperature and salinity variations, gravity, and events such as earthquakes or storms.

3) Physical contact is necessary for transfer of heat by conduction.

• Conduction of heat from one object to other, it must satisfy two conditions. Firstly, the objects should be in contact with each other. Secondly, they should have different temperature. But in this case, only the first condition is satisfied; hence, the heat energy will not be transferred

4) plastic is a/ an insulator of heat .

• plastic doesn't conduct heat, and over exposure to heat results in plastic melting very easily

5) Most of the heat from the sun thay falls on Earth's surface is radiated back.

• Heat-resistant glass is commonly consisting of a soda lime or silica that is a heat-resistant material, with a very low expansion coefficient and a highmelting point.