A Power Point presentation for class IX students for better comprehension of the topic- Keeping Warm for grade 4. I hope it was helpful. Kindly Like, Share and Comment.

1. Keeping Warm
By: Anushay Abrar

2. TEMPERATURE
★ The measure of the degree of hotness of an object is known as
‘Temperature’.
★ Temperature is measured using a ‘Thermometer’.
★ It is mostly measured in ‘Degree Celsius’.
★ The freezing point of water is 0 Degree Celsius.
★ The boiling point of water is 100 Degree Celsius.
★ Why is it Dangerous to use sense of touch to detect things with
very high or very low temperatures?

3. Types of Thermometer
There are various types of thermometers. These are just a few examples:

4. SOURCES OF HEAT
❖ Heat is a form of energy that flows from a Hotter
object to a cooler object until both objects reach
the same temperature.
❖ There are different sources of heat,some are
natural while others are man-made, for instance,
➔ Sun
➔ Lava
➔ Geysers, etcetera are natural sources of heat.
Whereas,
➢ Gas stove
➢ Toaster
➢ Hair dryer
➢ Heater are man-made sources of heat.

5. How does Temperature affect human beings and
animals?
● Temperatures are high during summer and low during winter.
● Temperature affects how human beings and animals live.
● To keep warm during winter, we wear thick clothing and try to stay indoors.
● Birds fluff up their feathers and some animals hibernate or migrate to warmer
places.
● To keep cool during summer, we drink lots of water, stay indoors or go to
somewhere cooler.
● Some animals stay in shade, while others burrow themselves underground.

6. Heat Conductors and Insulators