Uploaded by Nikolas Schwab

NaturalCausesOfClimateChange ShowIt2021 Worksheet

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Name:_______________________________________________ Date:_________________
Science
Natural Causes of Climate Change
Directions: Follow the directions below to complete the activity.
I.
Introduction
Humans have only been on Earth for 200,000 to 300,000 years.
Humans only started to produce excess greenhouse gases during
the Industrial Revolution, which started approximately 250 years
ago, but data and evidence have proven that Earth’s climate has
changed. Prior to the existence of humans, natural sources caused
climate change. These sources include variations in sunlight due
to Earth’s orbit, as well as increases and decreases in solar energy
due to changes in the sun’s activity. Volcanic eruptions have also
had an impact on Earth’s climate.
II.
Ice Ages
Conduct research to answer the questions below. Make sure to answer each question with complete
sentences. Reference all of your sources in section provided below.
1.
What is an ice age?
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2.
How many ice ages have occurred on Earth since its formation? When did the ice ages occur?
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3.
How do scientists know that these ice ages occurred?
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4.
What is an interglacial period?
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5.
What do scientists think caused the ice ages?
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Copyright 2019 © Lincoln Learning Solutions. All rights reserved.
Name:_______________________________________________ Date:_________________
Science
Natural Causes of Climate Change
Directions: Follow the directions below to complete the activity.
6.
What was the average temperature on Earth during the ice ages?
______________________________________________________________________________
______________________________________________________________________________
References:
III.
The Most Recent Ice Age
The most recent ice age ended approximately 11,700 years ago. Pretend that you are a news
reporter reporting on this ice age. In order to do so, you must research the last ice age and create
a summary of what you find. Write your response as if it were a news article, making sure to include
a title. You will need to include the following information:
• When did the last ice age occur?
• What caused it?
• What areas were covered in ice?
• What species lived during this period?
• What happened after the ice age ended?
References:
Copyright 2019 © Lincoln Learning Solutions. All rights reserved.
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