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.
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?
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.