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School
University of Maryland *
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Course
BMGT350
Subject
Geography
Date
Dec 6, 2023
Type
docx
Pages
3
Uploaded by ProfessorFlag2078
Name:
Fortune Teke
Date:
June 26
Student Exploration: Greenhouse Effect
Directions: Follow the instructions to go through the simulation. Respond to the questions and
prompts in the orange boxes.
Vocabulary:
global warming, greenhouse effect, greenhouse gas, heat flow
Prior Knowledge Questions
(Do these BEFORE using the Gizmo.)
1.
What do you notice when you get into a car that has
been sitting in the Sun for a while?
I notice that it is hot inside
2.
Why is the inside of the car so hot?
Because the sun was radiating down on the car
and it heated the inside of the car
3.
How would things be different if the car’s windows
were left open?
Things would be different
with the windows down because all the heat is
not trapped in the car, which would make the
car cooler.
Gizmo Warm-up
Like the windows of a car,
greenhouse gases
play a major role in
regulating Earth’s climate. Without the gases that trap heat in
Earth’s atmosphere, Earth would be a frigid desert like Mars
(average temperature -55°C, or -67°F). Too much greenhouse gas
and Earth could be a fiery inferno like Venus (average temperature
450°C, or 850°F).
On the
Greenhouse Effect
Gizmo, set the
Greenhouse gases
to
0% and the
Simulation speed
to
fast
.
1.
Click
Play
(
) and view the BAR CHART tab. The temperature will go up and down every day, but try to
look at the overall trend. What happens to the temperature over time?
Heat out stays the same, heat in fluctuates from 0-60 and temperature stays around the
same range
2.
Now set the
Greenhouse gases
to 100% and let the simulation run for a while. How does a maximum
amount of greenhouse gas affect the temperature?
Increases the temperature a lot
Reproduction for educational use only. Public sharing or posting prohibited. © 2020 ExploreLearning™ All rights reserved
Activity:
Heat in, heat out
Get the Gizmo ready
:
●
Click
Reset
(
).
●
Set
Simulation speed
to
slow
.
●
Be sure the
Greenhouse gases
level is 10%.
Question: How do greenhouse gases affect Earth’s climate?
1.
Observe
: Select the BAR CHART tab and click
Play
. After about 24 simulated hours, click
Pause
(
).
What do you notice about the
heat flow
into and out of Earth’s atmosphere?
It varies as the sun rises and sets
2.
Analyze
: Select the TABLE tab.
A.
At what time of day is heat flow into the
atmosphere (H
in
) greatest?
noon
B.
At what time of day is heat flow into the
atmosphere (H
in
) least?
6 pm to 6 am
C.
Does heat flow out of the atmosphere (H
out
)
change during the day?
no
D.
At what time of day is surface temperature
highest? Lowest?
Highest: 4:30
Lowest:7:00
3.
Predict
: Click
Reset
. When you change the amounts of greenhouse gases in the atmosphere, which
factor(s) do you expect to change? (
Circle your answer/answers.)
✏
4.
Experiment
: Select the BAR CHART tab, and click
Play
. While the simulation is playing, move the
Greenhouse gases
slider back and forth. What do you notice?
As the percentage of greenhouse gasses increases,the heat flows out of Earth’s
atmosphere increases ,and temperatures begin to increase. As the percentage of
greenhouse gasses decreases,the heat flow out of Earth’s atmosphere increases and
temperatures begin to decrease, Changing the percentage of greenhouse gasses does not
affect the amount of heat coming into the system
Reproduction for educational use only. Public sharing or posting prohibited. © 2020 ExploreLearning™ All rights reserved
Hand draw in this space or click here to select EDIT to use the drawing
✏
tool.
Heat flow in
Heat flow out
Temperature
5.
Experiment
: Click
Play
, and this time observe the GRAPH tab as you change the
Greenhouse gases
.
What do you notice?
increasing the greenhouse gasses causes the blue line to decrease and the green
lint to increase . Decreasing the greenhouse gasses cause the blue line to increase and the
green line to decrease. Changing the percentage of greenhouse gases does not affect the
light green line.
6.
Draw conclusions
: The influence of greenhouse gases on temperature is called the
greenhouse effect
.
Based on what you have seen, how do greenhouse gases affect the heat flow into and out of Earth’s
atmosphere?
Greenhouse gases do not affect the heat flow into the Earth's atmosphere, but they delay
or block the heat flow out of the atmosphere.
7.
Extend your thinking
: Atmospheric concentrations of greenhouse gases such as carbon dioxide have risen
dramatically in the past century. Most scientists agree that this has begun to result in
global warming
, a
slow increase in average temperature worldwide.
What are the possible consequences of global warming?
-Stronger and more frequent storms/tsunamis
-Death of animals that can evolve to cope with the new climate
-Hotter summers, milder winters
Note: The reason greenhouse gases raise the temperature of Earth’s atmosphere is similar to, but not identical
to, the way that the glass in a greenhouse raises the temperature inside.
In a greenhouse, sunlight passes through the transparent glass and is absorbed by the plants and soil below.
Heat is then radiated from plants and soil, which heats the air inside the greenhouse. The hot air is trapped by
the glass. If the glass were not there, the hot air would mix with the colder air outside, and the result would be
similar temperatures inside and outside the greenhouse.
In Earth’s atmosphere, greenhouse gases are transparent to visible light but absorb heat that is emitted from
Earth’s surface. Some of this heat is then reflected back to Earth. If the greenhouse gases were not present,
all of the heat would radiate into space instead.
Reproduction for educational use only. Public sharing or posting prohibited. © 2020 ExploreLearning™ All rights reserved
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