1. 2nd Science Midterm Review by Teacher Olivia
Chapter 3: Looking at Habitats
Lesson #1: Places to Live

2. Vocabulary Habitat: A place where plants and animals live. for +
*What can animals & plants find in a habitat to live?
Animals: food, home/shelter and water
Plants: soil, rain/water, sunlight and animals

3. Different kinds of habitats
Grassy and warm  grassland
Wet and grassy  pond
Cold and snowy  arctic
Hot and dry  desert

4. How do living things use their habitats?
Animals: 1) food: plants or other animals
2) shelter: hide and sleep
Plants: 1) different soil to grow
2) different weather
- dry places: big stems to hold and save water
- wet places: big leaves to get rid of extra water

5. 2nd Science Midterm Review
Chapter 3
Lesson #2: Food chains and food webs

6. Vocabulary
Food chain: a model of the order in which living things get the food they need.
- Shows how food energy moves from one living thing to another
Food web: 2 or more food chains are connected.
- one kind of animal can be food for many bigger animals
Food chain & food web both starts with the sun.

7. Vocabulary
Predator: an animal that hunts other animals for food (bigger animals)
Prey: animals that are hunted by predators (smaller animals)
Prey?

8. Food Chain Plants: are ‘producers’ - need sun to make their own food
Insects/animals: are ‘herbivore’
- eat plants for food
Snakes: are ‘carnivore’
- eat insects for food
Hawks: are ‘carnivore’
- eat frogs for food
Worms: are ‘decomposers’
- break the dead things up into very small pieces

9. Food Chain

10. 2nd Science Midterm Review
Chapter 3
Lesson #3: Habitats Change

11. Vocabulary Drought: a long period of time with little or no rain
- plants & animals can not live without water, but too much water will cause flood
- flood: when there’s too much water

12. Vocabulary Endanger: when many of one kind of animal die and
only a few are left
Extinct: When a living thing
dies out and no more of its
kind live on earth
Which animals are endangered?
Which animal is extinct?

13. Vocabulary Fossil: What is left of a living thing from the past
scientists get clues and study about habitats of the past from the plants and animal fossils
_______ can help tell how animals may have looked or moved.
Predict
-If fossils do not match the habitat they were found
 habitat has changed

14. How do habitat change Nature disaster can change habitat
no water/rain  drought
too much water  floods, typhoons, tsunami
fire  burn and kill animals or plants
Animals can change habitat
- beavers  make dams  pond
People can change habitat
cut down plants or trees
build houses or other buildings
pollutions

15. What happens when habitats change?
Animals
adapt to the new habitat  adaptation
find new habitat  migrate
many of them die  endangered or extinct
(people hunt them or build on their habitat)

16. 2nd Science Midterm Review by Teacher Olivia
Chapter 4: Kinds of Habitats
Lesson #1: Forests

17. Vocabulary
Woodland forest: A habitat that gets enough rain and sunlight for trees to grow well
Winter is cold
Summer is hot
Rain forest: A habitat where
it rains almost every day
- Always warm, steamy and moist

18. Woodland forest
Animals : deer, birds, bears, foxes, fish, insects, worms and snakes
* different ways to survive:
build homes in trees and sleep in logs during the winter
sleep through winter when there’s no food hibernate
- eat different food (leaves, fruits or animals) in different season
Plants : have leaves that
- change color in different season
- drop to the ground in the fall
- some stay green all year

19. Tropical Rain Forest Animals : Plants :
live in the treetops (high): bats, insects, colorful birds
live on the ground (low): jaguars, tapirs, wild boars (wild pigs)
Plants :
grow tall and have huge leaves
Orchids, ferns & mosses live on trees  to get sunlight
animals & plants try to blend in with the trees to stay safe
 camouflage

20. 2nd Science Midterm Review
Chapter 4
Lesson #2: Hot and Cold Deserts

21. Vocabulary Desert: a dry habitat that gets very little rain
very hot, dry and sandy
Hot during the day
Cold at night
Arctic: a very cold near the North Pole
- very cold and windy

22. Desert (hot and dry) Weather -Hot during the day Soil
-Cold at night
Soil
- sandy and rocky
Plants: cactus
steams & leaves  store water
roots  spread out far or deep to find water
Leaves  curl up during the day (why?)

23. Desert Animals * Where do they get water?
tortoises, snails, lizards, coyote
need to survive without much water
sleep during the day or stay in shed
come out at night to hunt for food
* Where do they get water?
eat plants
eat other animals
* Why do they have pale skin color?
Stay cool
Hide from other animals

24. Arctic (cold & dry desert)
Animals
- foxes, reindeer, polar bears, walruses
* How do animals survive & keep warm in the cold winter?
thick white fur
thick blubber (fat)

25. Arctic Plants small & short  sheltered from cold wind
Soil  under the surface & stay frozen all year
leaves  tiny
roots  shallow (short, not deep)
Why do plants have short roots?
Why can’t plants grow tall?

26. 2nd Science Midterm Review
Chapter 4
Lesson #3: Ocean and Ponds

27. Vocabulary Pond: a small body of fresh water that does not flow
- has little or no salt
Ocean: a large body of salt water that is always flowing.

28. Pond (fresh water/doesn’t flow)
Animals
frogs, fish, turtles, snakes, insects, alligators
breathe in different ways:
* insects  tube
* salamanders  skin
* fish  gills
Plants
roots  grow near the shore
stems, leaves, flowers  grow out of the water to get sunlight

29. Ocean (salt water) covers most of the earth
Animals
fish, sharks, dolphins  fins or flippers help them swim
jellyfish & squid  move by sucking in and forcing out water
sea turtles & clams  have hard shells
Sea star & blow fish  have sharp spines
Coral reef: a living ocean habitat
Plants
Kelp  kind of seaweed
 provide food & shelter to other animals

30. Clips

31. Best Luck