Food Chains and Food Webs

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This powerpoint gives information to students about the difference between food chains and food webs. There are three interactive activities to complete during the powerpoint.

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Food Chains and Food Webs: 

Food Chains and Food Webs What’s the Difference??? By: Angela Hill

Food Chains: 

Food Chains A food chain is the movement of food energy in a sequence of living things. In a food chain, plants take in energy from the sun. They are called producers because they “produce” their own food. Then, an animal or insect eats the producer. They are called the consumer. Next, another living creature eats the living thing that ate the plant. This keeps going until a decomposer eats the last living creature that was on the food chain.

Food Chain Example: 

Food Chain E xample In this food chain example, the plant gets its energy from the sun. Then, the insect eats the plant. Next, the frog eats the insect. The snake will then eat the frog, and last, the hawk will eat the snake. After the hawk dies, decomposers will get rid of the hawk by decomposing it.

Different Types of Food Chains: 

Different Types of Food Chains There are many different types of food chains. This is because there are different types of ecosystems around the world. A food chain in a water ecosystem is going to be different from a food chain in the desert.

What Does a Food Chain Consist of?: 

What Does a Food C hain C onsist of? Food chains consists of producers, consumers, and decomposers. But, there are different types of consumers. Consumers that are eaten are called “prey”. A consumer that eats prey is a predator. Prey are animals that are hunted and predators are the hunters.

Why Do We Need Preys and Predators?: 

Why D o We N eed P reys and Predators? Predators limit the number of prey animals in a habitat. Wolves are predators of antelope. They keep the population of antelope from increasing too much, so the antelope don’t eat all of the producers. Predators often compete for the same prey. This limits the number of predators in a habitat. If there is not enough food source, the predator will move somewhere else.

Chain Reaction Game (click on the picture below ): 

Chain Reaction Game (click on the picture below )

Food Webs: 

Food Webs A food chain shows how an animal gets energy from one food source. But, food chains can overlap. Several food chains that overlap form a food web . A food web is a system of food chains that overlap. This mean that a hawk doesn’t just eat snakes. They eat sparrows and mice, also. So, the hawk is part of more than one food chain.

Food Web Example: 

Food Web Example

Food Web Example: 

Food Web Example From the picture, you can see that the grass is eaten by the squirrel, moose, and pine grosbeak. Also, the lynx can eat a wolf or bear. The food chain overlaps, which is called a food web.

Antarctic Ocean Food Web (click on the picture below): 

Antarctic Ocean Food Web (click on the picture below)

Fun With Food Webs (Click on Picture ): 

Fun With Food Webs (Click on Picture )

So, What are the Differences?: 

So, What are the Differences? Food Chain FOOD CHAINS FOLLOW A SINGLE PATH AS ANIMALS EAT EACH OTHER . Food Web FOOD WEBS SHOW HOW PLANTS & ANIMALS ARE INTERCONNECTED BY DIFFERENT PATHS.

Here is an Example:: 

Here is an Example: Food Chain Food Web Just 1 path of energy. Everything is connected to more than 1 path.

The End: 

The End All pictures used were from Microsoft Office ClipArt. Activities were used from www.hspscience.com and www.ecokids.ca