Heat Energy

$1 \mathrm{cal}=$_____ $\mathrm{J}$ of energy of heat.

How the temperature level in increase in water when heating?

List the effects of heat on a substance.

What is the meaning of sources of heat?

What are the sources of heat explain and give example?

What are the sources of heat ?

What are the harmful and useful effects of heat to our body?

What are the effects of heat on a material ?

How heat and temperature affect our daily life?

How does heat affect our environment?

Describe the interconversion of three states of matter with the help of a diagram.

What is the source of heat?

What are the effects of heat in real life?

The heat given to a substance may result in increase in _____.

Look at the pictures given below. Write solid, liquid and gas under its matching molecular arrangement. Answer the question based on these pictures.

Name the process involved by which A changes into C.

Give one word for the following:

The form of energy which causes the sensation of hotness or coldness. (Sound/Heat)

What are the conditions required for burning to occur?

Hold a piece of ice with your fingers. What is its shape? What happens when the ice melts? Can you still hold it with your fingers? Does it have a shape?

Which of the following is the effect of heating?

Name the process in which a solid changes to liquid.