5th Grade - SCIENCE - Chapter 8 TEST Flashcards Preview

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Flashcards in 5th Grade - SCIENCE - Chapter 8 TEST Deck (28):
1

True or false

Mann cannot destroy what God has created and is maintaining

Ture

2

True or false

All stressors are man-made

False

3

True or false

Man honors God by using his resources wisely

True

4

True or false

Photosynthesis and respiration are part of the nitrogen cycle.

False

5

True or false

Areas of the earth that have only two seasons usually have a wet season and a dry season.

Ture

6

True or false

Fires are never beneficial to an ecosystem.

false

7

True or false

Consumers get nitrogen compounds by eating other animals or plants.

True

8

True or false

Carbon dioxide is released into the air during decomposition.

True

9

A _____ is a regular pattern of change.

cycle

10

Nitrogen is most often changed into usable compounds by _____.

bacteria

11

Regular division of the year are called _____.

seasons

12

During _____, plants take in carbon dioxide and release oxygen.

photosynthesis

13

The water cycle includes precipitation, transpiration, _____ and condensation.

evaporation

14

During _____, people and animals breathe in oxygen and breathe out carbon dioxide.

respiration

15

In many parts of the earth, the ____ changes as the seasons change.

temperature

16

Plants release water vapor into the air through ____.

transpiration

17

The largest man-made stress is probably _____.

habitat destruction

18

A _____ is any physical hazard to life caused by having too much or too little of things needed for life.

stress

19

This occurs whenever an ecosystem receives more water than it can store or use.

monsoon

20

A _____ occurs whenever an ecosystem receives less water than it needs.

drought

21

The gradual changes in the populations or organisms in an ecosystem are called _____.

succession

22

Plant and animal species that originally live in an ecosystem are called _____.

native species

23

A species is considered ____ when it last known member dies.

extinct

24

A species becomes _____ when its population is so small that the species may soon become extinct.

endangered

25

Species that are not native to an ecosystem and can cause harm are ____.

invasive

26

How is a drought different from other natural disasters?

It does not have a definite beginning or ending.

27

What is one problem that invasive species can bring to an ecosystem?

- increased number of predators of a native species
- diseases
- increased competition for food and water

28

Give examples of how two cycles are dependent on each other

- water is needed for the water cycle and for the carbon cycle during photosynthesis
- precipitation is part of the water cycle and also carries nitrogen compounds down to earth
- In autumn, the leaves fall and decay. Bacteria breakdown the leaves to form nitrogen compounds. During Spring, plants grow and produce new leaves, which are needed for photosynthesis to occur.