Page 46 - Active Science 5 Ebook and Activity

Think Hard

• How do we hear sounds around us?
• Give reasons, when you enter a dark movie hall, you are not able to see anything. But after
a few seconds, you can see the steps and seats clearly.

• A hairpin should not be used to clean the ears. Why?
• Different objects stimulate different sense organs. Discuss.

Project Work

• Collect the pictures of various exercises undertaken in a gym. Describe which bones or
muscles are exercised in each.

Life Skills Activity
Sometimes your ears feel funny when you are on a plane; going through a tunnel or driving
uphill. This is because there is air inside your eardrum and outside. You need to let more air

into the inside of your ear to balance the air pressure. Try opening your mouth wide as if you are
yawning, chewing or blowing your nose. This lets air through the eustachian tube into the inner
ear. Your ears will feel like they go ‘pop’ and you will be able to hear normally again.

Research and Development
1. When exposed to sunlight for a while, human skin darkens. The skin tone of people changes

according to the places they live in.
a. Use a world map and mark any four countries on it.
b. Collect and paste pictures of the inhabitants of those countries.

c. Is there a variation in the skin tone?
d. Write your comments.

Field Trip

Visit the school playground at a time when students are practising for an upcoming event. Note
their posture before they start the race. Find its significance.

Net Work
• To learn some yoga postures for daily practice log on to:

www.homeremedyshop.com/30-east-to-do-yoga-poses-for-kids

46 Active Science-5