Science Olympiad Class 3a Flashcards
What are the three resources that living things need to survive?
Food
Water
Air
A substance or an object that all living things need for naromal growth is known as a?
Resource
Resources are categorised as?
Renewable Resources
Non Renewable resources
The Resouces that renew themselves and are always available to us as they keep on generating are known as?
Renewable Resource
Give four examples of Renewable resouces?
Water
Soil
Solar Energy
Forests
The four important sources of water are?
River
Lake
Wells
Rain
What percentage of water available on earth is fresh water?
3 per cent
What percentage on earth is the water salt water?
97 per cent
Can moving air generate electricity?
Yes. With the help of wind mills
How do we human pollute the air?
Vehicular air pollution
factory chimney smoke pollution
How do we humans pollute the soil?
Industrial waste
Agricultural chemicals
Give two important uses of soil?
It supports the trees and gives us shelter
Provides us with minerals copper and iron
