Heat And Cold

Question 1

What is the primary source of heat for the Earth?

Answer 1

The Sun

The Sun provides essential heat that supports life and various processes on Earth.

Question 2

Name three ways heat can be produced.

Answer 2

• Burning
• Rubbing
• From electricity

These methods represent different sources of heat generation, applicable in various contexts.

Question 3

What are some daily life applications of heat?

Answer 3

• Cooking
• Killing germs
• Drying things
• Keeping warm

Heat plays a crucial role in many everyday activities, ensuring safety and comfort.

Question 4

True or False: The skin can accurately sense how hot or cold something is.

Answer 4

False

While the skin can perceive temperature to some extent, it is not reliable for precise measurements.

Question 5

What tool should be used to measure the exact temperature?

Answer 5

Thermometer

A thermometer provides an accurate reading of temperature, essential for various activities.

Question 6

Fill in the blank: When something is heated, its temperature ______.

Answer 6

increases

Heating an object leads to a rise in its thermal energy and temperature.

Question 7

Fill in the blank: When something is cooled, its temperature ______.

Answer 7

decreases

Cooling an object results in a reduction of its thermal energy and temperature.