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7U4L3a Environmental Changes Intro

7U4L3a Environmental Changes Intro

Assessment

Presentation

Science

7th Grade

Practice Problem

Medium

NGSS
MS-LS2-4, MS-ESS3-4, MS-ESS1-4

+7

Standards-aligned

Created by

Stacy-Michelle Reid

Used 45+ times

FREE Resource

16 Slides • 7 Questions

1

Environmental Changes Intro

7.MS-LS2-4. Analyze data to provide evidence that disruptions (natural or human-made) to any physical or biological component of an ecosystem can lead to shifts in all its populations.

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2

Short Term Changes

  • Changes that occur quickly in an ecosystem and affect organisms immediately

  • Does not give organisms time to adapt to changes 

  • Forces populations to move or possibly risk death

3

Examples of Short Term changes

  • Drought

  • Flood

  • Volcanic Eruption

4

How Do Short Term Changes Affect Organisms?

5

Drought –

the severe lack of rainfall causes producers to die which eventually reduces food sources for all other organisms

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6

Flood –

organisms that are unable to escape the rising water are swept away and drown

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7

Volcanic eruption –

gas, ash, and lava covers a large area and destroys shelters, food sources, and habitats of many organisms

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8

Multiple Choice

A fire destroys all of the trees and plants in the forest. How might this affect the birds in the area?

1

The birds will plant seeds and grow new trees.

2

The birds will have more food to eat.

3

The birds will plant seeds and grow new trees.

4

The birds will have no place to build their homes.

9

Multiple Choice

All of the following are examples of environmental changes that can be caused by humans except - 
1
clearing land for housing developments
2
pesticides
3
volcanic eruption
4
pollution

10

Long Term Changes

  • Changes that occur slowly over time and affects organisms over several generations

  • Gradual changes that allow organisms time to adapt 

  • Organisms become better adapted to survive in their environment

11

Multiple Choice

An organism that cannot adapt to changes in the environment will most likely -

1

produce more offspring

2

die

3

change its traits to survive

4

store more food

12

Examples of Long Term Changes

  • Climate change

  • Pollution

  • Deforestation

13

How do Long Term Changes Affect Organisms?

14

Climate change –

can cause a change in migration patterns, nesting, and hibernation of many different species 

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15

Pollution –

chemicals, pesticides, and fertilizers can poison air, soil, and water over time

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16

Deforestation –

contributes to habitat destruction of a large number of species

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17

Checkpoint!

18

Multiple Choice

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The ICE AGE is

1

Short Term Environmental Change

2

Long Term Environmental Change

19

Multiple Choice

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URBANIZATION is

1

Short Term Environmental Change

2

Long Term Environmental Change

20

Multiple Choice

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A WILDFIRE is

1

Short Term Environmental Change

2

Long Term Environmental Change

21

Multiple Choice

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A BLIZZARD is

1

Short Term Environmental Change

2

Long Term Environmental Change

22

Environmental Changes Vocabulary

  • adaptation - how organisms adjust to a new environment or make changes to their current environment

  • climate change - a change in global or regional climate patterns

  • conservation - to prevent the wasteful use of a resource

  • ecosystem - all of the living and nonliving things that interact in an area

  • environment - the setting or habitat in which organisms live

23

Environmental Changes Vocabulary

  • long term environmental changes - changes that occur slowly over time and affect organisms over several generations

  • pollution - the contamination of air, water, or soil by substances that are harmful to living organisms

  • short term environmental changes - changes that occur quickly in an ecosystem and affect organisms immediately

  • succession - the gradual growth of new organisms in an ecosystem

  • urbanization - an increase of an urban (city) population

Environmental Changes Intro

7.MS-LS2-4. Analyze data to provide evidence that disruptions (natural or human-made) to any physical or biological component of an ecosystem can lead to shifts in all its populations.

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