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Science Review
Chapter 3 and Chapter 4
Lesson 1 - Habitats
• A habitat is a place where plants and
animals live.
• Different plants and animals need different
habitats to live.
• Animals need a habitat where they can
find food, water, and shelter
• Plants need a habitat where they have soil,
rain, sunlight, and animals.
Animals
• Animals eat plants or other animals.
• They can get water from their food or from
a pond in their habitat.
• Animals use their habitat to hide and sleep.
• A shelter for an animal can be in trees, a
tunnel underground or under rocks.
Plants
• Plants need different types of soil.
• Some grow in sandy, and some grow in
rocky soil.
• Plants have ways to adapt in their habitat
to hold water if in a dry habitat.
• Plants can get rid of extra water if in a wet
habitat.
Lesson 2 –
Food Chains and Food Webs
• A food chain shows what animals eat and
how they get their food.
• Most food chains start with the sun.
• A food web is two or more food chains
together.
Habitats Change
• Habitats can change because of nature or
because of people.
• When a habitat changes animals have to
adapt or they might die.
Nature Reasons
• A drought is a long time with
little or no rain in a habitat.
• Floods, fires, weather, climate
change, and animals are other
reasons a habitat can change.
• Animals like beavers make
dams.
People Reasons
• People change habitats
too.
• Humans cut down trees,
start fires, and build
houses in habitats.
Changing Habitats
• Animals may become endangered if their
habitat changes and they cannot find what
they need to live.
• An animal is endangered when there are
only a few left.
• Animals may become extinct if none are
left.
• All we have left of extinct animals are
fossils.
Endangered Animals
Chapter 4 – Lesson 1
Forests
• Woodland Forest
–
–
–
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A habitat that gets enough rain and sunlight.
Many different plants and animals.
Hot in summer and cold in the winter.
Animals hibernate, migrate, or store food to adapt to
the cold winter.
– Most leaves fall off and change color in the fall. Some
trees stay green all year
– Some animals that live in a woodland forest are: deer,
owls, woodpeckers, foxes, rabbits, raccoons, and
bears.
Chapter 4 – Lesson 1
Forests
• Tropical Rain Forest
– A habitat where it rains almost everyday.
– Many different plants and animals live in this
habitat.
– Trees grow very tall and have big leaves.
Leaves stay green all year.
– Treetops block sunlight.
– Some animals that live in this habitat are:
tigers, snakes, parrots, and monkeys.
Chapter 4 – Lesson 2
Hot and Cold Deserts
• A hot desert is a dry habitat that gets very little
rain.
– They are hot during the day and cool at night.
– Plants can store water, have thick stems and long
roots.
– Desert animals get water by eating plants or other
animals.
– Animals have pale colors, hide underground, and
hunt at night when it’s cooler.
– Some animals that live in this habitat are: snakes,
lizards, tortoises, camels, and coyotes.
Chapter 4 – Lesson 2
Hot and Cold Deserts
• The Arctic is a desert near the North Pole.
– This habitat is cold and dry.
– Animals stay warm with thick fur or blubber.
– The Arctic has small, low plants but no tall trees.
– Spring is short so plants must grow fast.
– Plants have short roots because of frozen soil.
– Some animals that live in this habitat are: polar
bears, walruses, reindeer, and Arctic foxes.
Chapter 4 – Lesson 3
Oceans and Ponds
• The ocean is a large body of salt water.
– The water flows and is very deep.
– The ocean is the largest habitat and covers most of
the Earth.
– An ocean plant, called kelp is a kind of seaweed. It
gives food and shelter to many animals.
– Animals have body shapes, fins or flippers to help
them swim.
– Some animals that live in this habitat are: whales,
dolphins, sharks, turtles, octopuses, and other fish.
Chapter 4 – Lesson 3
Oceans and Ponds
• A pond is a small, fresh water habitat that does
not flow.
– Most animals that live in fresh water cannot live in salt
water.
– Pond plants grow near the shore where the water is
shallow.
– Pond animals breathe in different ways. Some with
tubes, gills, or skin.
– Some animals that live in this habitat are: frogs, ducks,
heron, fish, insects, and beavers.