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3rd Grade Science > Chapters 7-8 > Flashcards

Chapters 7-8 Flashcards

1
Q

A group of plants and animals that depend on each other to live

A

Community

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2
Q

What is a community?

A

A group of plants and animals that depend on each other.

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3
Q

What kind of community is in the pond?

A

A freshwater community

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4
Q

Why do plants grow easily around the pond?

A

There are many minerals in the mud to nourish the plants

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5
Q

What does it mean to make a comparison?

A

To discover how things are different and how they are alike

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6
Q

What plants grow in the pond and the ocean?

A

Algae

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7
Q

What is dissolved in the water that fish need to breathe?

A

Oxygen

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8
Q

What do fish use to breathe?

A

Gills

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9
Q

How do fish and plants of the pond help each other?

A

The plants release oxygen for the plants to breathe and the fish release carbon dioxide for the plants

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10
Q

What is God’s way of making an animal blend in with its surroundings

A

Camouflage

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11
Q

How does a muskrat steer in the water?

A

With its tail

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12
Q

How long can a muskrat hold its breath?

A

5 minutes

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13
Q

What is the first stage of growth for an amphibian?

A

Egg

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14
Q

Where is the egg laid?

A

In a jelly like coating

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15
Q

What is the second stage of growth after the egg hatches?

A

Tadpole

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16
Q

Where does the tadpole live?

A

In the water

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17
Q

How is the tadpole able to get the oxygen it needs to live?

A

It has gills

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18
Q

When can a tadpole live on land?

A

When they begin breathing with lungs

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19
Q

When is a tadpole frog considered an adult frog?

A

When there is no tail left at all

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20
Q

What is the salamander tadpole also called?

A

Larva

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21
Q

What can the salamander do if it loses its tail or leg?

A

It can grow another one

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22
Q

Why must the salad sander live in a moist, shady place?

A

They get the water they need through their skin. If their skin dries out they die.

23
Q

What kind of bird drills small holes in the bark of trees to get sweet sap to drink?

A

sapsucker

24
Q

What kind of plants does the forest community depend on?

A

trees

25
Q

How does the sapsucker depend upon trees?

A

it sucks the sap out of the tree

26
Q

How has God designed the balance in the forest community?

A

Birds eat the insects. Without the birds to eat the insects, the insects would destroy the trees and other plant life of the forest. The birds benefit from the trees.

27
Q

What kind of life begins a food chain?

A

a green plant

28
Q

What kinds of trees do squirrels and chipmunks live around?

A

hickory and oak

29
Q

How does a the porcupine benefit from trees?

A

It eats the twigs, leaves, barks, and roots

30
Q

How does a beaver benefit from trees?

A

it cuts down trees to use for food and building its home

31
Q

Describe a food chain involving mice

A

a mouse nibbles on seeds, an owl eats the mouse

32
Q

Describe a food chain involving rabbits

A

a rabbit eats green plants on the floor of the forest. A fox eats the rabbit

33
Q

Describe a food chain involving insects

A

insects eat plants, birds eat the insects, an opossum eats the baby bird, a fox may eat the opossum

34
Q

What do the tiniest plants of the forest grow from?

A

spores that float through the air

35
Q

How are fungi and bacteria helpful for the forest?

A

They work together to decay dead leaves.

36
Q

Give an example of a kind of fungus

A

mushrooms and toadstools

37
Q

What are the largest plants of the forest and the world?

A

trees

38
Q

What are the dark rings of wood beginning at the center of a tree trunk?

A

heartwood

39
Q

What are the lighter rings of the tree called and what do they do?

A

sapwood; they carry the sap from the roots to the leaves

40
Q

What does the bark on a tree do?

A

protect the sapwood

41
Q

How can you tell the age of a tree?

A

Count the annual rings or circles at the end of the trunk. Each year stands for one years growth.

42
Q

List some animals that live in or on trees

A

birds, owls, squirrels, racoons

43
Q

the branches and leaves

A

crown

44
Q

Which part of the tree makes food for the rest of the tree?

A

leaves

45
Q

What is the stem of the tree?

A

trunk

46
Q

What takes in water and minerals from the soil?

A

roots

47
Q

What holds the tree in the ground?

A

roots

48
Q

a series of plants and animals, each depending upon the next member in the series for food.

A

food chain

49
Q

plants containing no chlorophyll which must get their food from other plants or animals

A

fungi and bacteria

50
Q

the circles in the wood of a tree trunk. Each circle stands for a year’s growth.

A

annual rings

51
Q

What is the substance from the soil that keeps leaves green

A

nitrogen

52
Q

What is the ability to blend in with surroundings called?

A

camouflage

53
Q

What does frost do to leaves?

A

kills them and makes them brown?

3rd Grade Science (9 decks)

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