Environmental Changes

Environmental Changes

Short Term and Long Term Changes

Learning Objective:

• We will explore how short-and-long-term environmental changes effect organisms and traits in subsequent populations.

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.

Poll

What do you think is an example of Short Term Environmental Change?

• Drought

• Flood

• Volcanic Eruption

How Do Short Term Changes Affect Organisms?

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

• Flood – organisms that are unable to escape the rising water are swept away and drown.

• Volcanic eruption – gas, ash, and lava covers a large area and destroys shelters, food sources,  and habitats of many organisms.

Poll

Which Short Term Environmental Change are you most worried about?

• Drought

• Flood

• Volcanic Eruption

Multiple Choice

How would you sum up Short Term Environmental Changes?

• They happen very fast.

• They happen very slowly.

• There is no way to predict them.

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.

Multiple Select

Choose all the examples below you think are Long Term Environmental Changes:

• Climate Change

• Pollution

• Deforestation

How Do Long Term Changes Affect Organisms?

• Climate change – can cause a change in migration patterns, nesting, and hibernation of many different species.

• Pollution – chemicals, pesticides, and fertilizers can poison air, soil, and water over time.

• Deforestation – contributes to habitat destruction of a large number of species.

Open Ended

Have you seen evidence of Long Term Environmental Changes? Share your experience. (Mentor Sentence: "I have/have not seen evidence of Long Term Environmental Change because...")

Multiple Choice

What can be said of Long Term Environmental changes?

• They happen quickly.

• They happen slowly.

• They can't be predicted.

What Short Term and Long Term Changes have in common:

• Cause changes in ecosystems.

• Can lead to changes or variation in a species.

• Can cause death to certain populations on a small or large scale.

Multiple Choice

Which Environmental Change allows organisms time to adapt?

• Short Term

• Long Term

Multiple Choice

Which Environmental Change happens quickly?

• Short Term

• Long Term

Multiple Choice

Which Environmental Change forces organisms to move or die?

• Short Term

• Long Term

Multiple Choice

Which Environmental Change affects organisms over many generations?

• Short Term

• Long Term

Multiple Choice

Which Environmental Change best describes an Ice Age?

• Short Term

• Long Term

Multiple Choice

Which Environmental Change best describes Urbanization?

• Short Term

• Long Term

Multiple Choice

Which Environmental Change best describes Wildfires?

• Short Term

• Long Term

Multiple Choice

Which Environmental Change best describes a Blizzard?

• Short Term

• Long Term

Open Ended

Do you think all environmental changes occur naturally? (Mentor Sentence: "I believe that environmental change is caused by...")

Open Ended

What Environmental Changes do you want to learn more about?

Open Ended

How can I make this lesson better? (Mentor Sentence: "This lesson would be better if you...")