The City SchoolThe City School GULSHAN JUNIOR GIRLS

2010-2011

Javeria Ali

Science teacher

ScienceScience

• REVERSIBLE AND IRREVERSIBLE REVERSIBLE AND IRREVERSIBLE CHANGES CHANGES

•FOOD CHAIN FOOD CHAIN

•FORCES IN ACTIONFORCES IN ACTION

•CHANGING CIRCUITSCHANGING CIRCUITS•ENQUIRY IN CONTEXTENQUIRY IN CONTEXT

FOOD CHAIN FOOD CHAIN

• A food chain always starts with a A food chain always starts with a plant. plant. (are PRODUCERS.)(are PRODUCERS.)A food chain ends with a A food chain ends with a PREDATOR. PREDATOR. (The predator is at the top of the (The predator is at the top of the food chain)food chain)

All living things need food to give All living things need food to give them the energy to grow and move. them the energy to grow and move. What is a food chain?What is a food chain?A food chain shows how each living A food chain shows how each living thing gets its food. It shows who is thing gets its food. It shows who is eating who. The arrow means "is eating who. The arrow means "is eaten by" . eaten by" . Grass ----> Grasshopper ----> Toad -Grass ----> Grasshopper ----> Toad -Snake ----> Hawk Snake ----> Hawk Grass is eaten by Grasshopper is Grass is eaten by Grasshopper is eaten by Toad is eaten by Snake is eaten by Toad is eaten by Snake is eaten by Hawkeaten by Hawk

• Nothing has such power to broaden Nothing has such power to broaden the mind as the ability to investigate the mind as the ability to investigate systematically and truly all that systematically and truly all that comes under thy observation in life.comes under thy observation in life.      -       - Marcus Aurelius (Marcus Aurelius Marcus Aurelius (Marcus Aurelius AntoninusAntoninus))