This presentation was developed for a middle school/junior high science class. Through use of this presentation and their science book, students will

Transcription

1 This presentation was developed for a middle school/junior high science class. Through use of this presentation and their science book, students will be able to identify and name important characteristics of the world s biomes. Each biome is discussed individually. The presentation shows each biome s location, climate, plant, and animal life.

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3 * A biome is an area that has the same climate (weather) and the same organisms that live there. * Biomes help scientists describe the world. * There are 6 land biomes and 2 water biomes

4 * Tundra * Coniferous Forest * Deciduous Forest * Tropical Rain Forest * Grassland * Desert

5 Where is the tundra? Around the North Pole and near the Arctic Ocean Climate (weather) Very cold and dry Temperature: less than -5 C Only has 25 centimeters or less of rain every year What the land looks like Permafrost: the dirt that is always frozen (even in the spring and summer) Flat land with only a few small, thin trees

6 Plants Fungi and algae They cover the rocks and ground Animals wolf caribou duck lemming musk ox ermine marmot polar bear sandy hill crane snowy owl

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9 Climate Cold and snowy What the land looks like In the winter: Ground is frozen In the spring: Taiga: swampy forest Snow melts and the ground becomes wet and swampy because the deeper ground is frozen

10 Alaska Canada Europe Asia In Canada, Alaska, northern Asia, and northern Europe

11 Conifer trees (have cones) cone Have needles covered with wax Wax protects the needles from freezing needles Kinds of conifer trees pine spruce fir

12 Moose Beaver Wolf Black bear Hawk Owl Lynx Red Squirrel Wolverine Snowshoe Rabbit

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15 Climate Summers are warm Winters are cold Gets 75 centimeters of rain every year (that s over 2 feet of rain!) What is special about deciduous trees? The leaves change colors and fall off the trees in autumn and grow new leaves in the spring The leaves on the ground make the dirt better and help plants grow.

16 Deciduous forests are between northeastern United States and Canada. Some are in the eastern United States. Others grow in Europe and eastern Asia.

17 * Trees * Oak * Hickory * Flowers * Lily of the valley * Maple * Beech * Star Flower

18 Eagle Brown Bear Black Bear Chipmunk Raccoon Porcupine Red Fox White-tailed Deer Mouse Coyote

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20 Climate Rains almost everyday Gets almost 10 feet of rain every year. Very hot all year long

21 The largest tropical rainforest is in South America. It is called the Amazon rain forest. They are also found in central Africa, Central America, Southeast Asia, Hawaii, and a small area of Australia.

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31 There are two kinds of grasslands. Temperate grasslands: called prairies Tropical grasslands: called savannas Climate All grasslands get between 25 and 75 centimeters of rain every year. Coniferous forest

32 The largest grassland is in Africa. There are also grasslands in North America, South America, central Asia, and northern Australia.

33 Some are found in the United States Illinois is on the prairie, so we live in the temperate grasslands. Land is usually flat Not a lot of trees The most important plant is. grass

34 Largest savannas are found in Africa There are only a few trees on the savanna Why don t a lot of trees grow? Savanna does not get a lot of rain People set the grass on fire to stop trees from growing Animals eat the trees before they can start growing tall

35 Grass Can live without a lot of rain Acacia tree Baobab tree

36 African elephant Black Rhinoceros Cheetah Wild Dog Giraffe Zebra Ostrich Hippopotamus Hyena Lions Warthog

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38 There are two kinds of deserts. Hot deserts and cold deserts hot desert cold desert Sahara Desert Gobi Desert

39 In Africa, western North America, western Asia, central Australia, and western South America.

40 * Climate * gets less than 25 centimeters of rain every year * hot during the day and cool at night * Climate * gets less than 25 centimeters of rain every year * cold all of the time

41 * can live there because the roots are close to the top of the ground and can get the water quickly. Cactus Aloe Barrel Cactus Prickly Pear Cactus

42 Black-collared lizard snakes camel desert iguana roadrunner jackrabbit

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45 * Marine * Freshwater

46 * The marine biome is the ocean biome. * covers about 70% of the Earth * has salt water * Organisms that live in the ocean are able to live in the salt water. * sunlight, water pressure, and water movement affect the organisms too because of these things, the ocean is divided into different areas different organisms live in each area * The water that is very deep has cold temperatures, high pressures, and is very dark

47 Many of the plants live near the top of the water they need the sunlight to help them grow and make food

48 Most marine organisms live near the top of the water or close to land Many animals dig down into the sand or hang on to rocks, so they do not get lost in the sea Other larger animals live where the water is deep barracuda star fish clown fish crab flashlight fish green sea turtle killer whale shrimp

49 * Freshwater means it does not have salt in it * Includes still water and moving water * Examples of still water * Examples of moving water * lakes and ponds * rivers and streams

50 * Many of the plants that live in freshwater have strong roots to keep them in one place. * Some plants grow around the edge of the lake or float on the top of the water cattail water lily

51 bass carp trout mallards bull frog

52 * Estuary * border between a freshwater biome and a marine biome * are salt marshes, lagoons, swamps, and mouths of rivers that go into the ocean * are a mixture of freshwater and salt water * some scientists believe estuaries are another biome, other scientists believe estuaries are an ecosystem * not very deep, so sunlight gets to all the water * have many fish and plants

53 * There are 6 land biomes: Tundra Coniferous Forest Deciduous Forest Tropical Rain Forest Grassland Desert * There are 2 water biomes: Marine Freshwater * The special kind of water is an. estuary