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Gizmos: Heat Absorbtion
By Brianne Hogenson
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Last updated almost 4 years ago
38 questions
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Instructions
Prior Knowledge/Warm Up
1
1
Activity A
1
1
1
1
Activity B
3
1
Activity C
2
1
Extra Credit
5
Link to this Gizmo
https://gizmos.explorelearning.com/index.cfm?method=cResource.dspView&ResourceID=655
Shine a powerful flashlight on a variety of materials, and measure how quickly each material heats up. See how the light angle, light color, type of material, and material color affect heating. A glass cover can be added to simulate a greenhouse.
Link to this Gizmo
https://gizmos.explorelearning.com/index.cfm?method=cResource.dspView&ResourceID=655
Question 1
1.
Click on the correct answer
Is it usually hotter outside when the Sun is low in the sky, such as early in the morning, or when the Sun is high in the sky, around noon?
Question 2
2.
Click on the correct answer
If you want to stay cool on a hot, sunny day, should you wear black or white?
Gizmo Warm-up
In the Heat Absorption Gizmo, a powerful flashlight can shine on a variety of materials.
Make sure that the
Light
color is set to
White
.
1
Question 3
3.
Drag the Wood under the beam of light. What do you notice?
1
Question 4
4.
What is the color of the light that is reflected off the wooden block?
2
Question 5
5.
Activity A
Angle of Light
Getting the Gizmo Ready
- Click Reset
- Check that the
light color
is set to
White
- If necessary, drag the
wood
under the light
Question 6
6.
Observe:
Drag the flashlight to several different angles. When is the light beam most concentrated on the piece of wood?
Question 7
7.
Form hypothesis:
Which angle will result in the coldest piece of wood? __________
o
Question 8
8.
Predict:
Which angle will result in the hottest piece of wood? __________
o
Experiment: For each angle listed below, record the final temperature of the wood after 3 hours of heating with the flashlight.
1
Question 9
9.
Final Temperature
20
o
angle.
_______
o
C
1
Question 10
10.
1
1
1
1
Question 15
15.
Apply: St. Louis, Missouri, is located near the middle of the United States.
On June 21, the noon Sun rays hit St. Louis at an angle of 75°.
On December 21, the noon Sun rays hit at an angle of 28°.
How will this affect the temperature in St. Louis on these dates?
Activity B
Colored Materials
Getting the Gizmo Ready
- Click
reset
- Drag the Flashlight so that the
light angle
is
75
o
Question 16
16.
Observe:
Drag the red brick under the flashlight beam. Try three different Light colors: red, blue, and green.
Red
Blue
Green
What color(s) reflect off a red brick?
What colors of light are absorbed by the brick?
Collect data: Heat the red, green, and blue bricks under each color of light. Record results.
Have the light at a 75
o
angle
3
Question 17
17.
2
Question 18
18.
3
Question 19
19.
2
3
2
Question 23
23.
Extend your thinking:
White light is a combination of red, green, and blue light.
Why is it cooler to wear a white shirt on a sunny day than a black shirt?
Activity C
Comparing Materials
Getting the Gizmo Ready
- Click
reset
- Change the
light color
to
white
Question 24
24.
Predict: In this activity, you will compare how metal, wood, water, and brick heat up.
Which substance do you think will heat up the most? __________
Which substance do you think will heat up the least? __________
Experiment:
Using
white light
, heat up each of the following substances for
3 hours
Set angle to 75
o
No Glass
For the change in temperature take
Final Temperature - Initial Temperature
2
Question 25
25.
2
Question 26
26.
2
2
2
1
Experiment:
Using
white light
, heat up each of the following substances for
3 hours
Set angle to 75
o
Click on Add glass cover
For the change in temperature take
Final Temperature - Initial Temperature
2
Question 31
31.
2
Question 32
32.
2
2
2
1
Question 37
37.
Extend your thinking: Why is it dangerous to leave an infant or pet in a car on a sunny day with the windows rolled up?
Question 38
38.
Answer the 5 questions below the gizmo. Take a screenshot of your score and paste it below.
visibility
View drawing
Click Play to start the clock
What happens to the temperature of the wood _______
The light that is not reflected away is absorbed by the wood. What does the absorbed light energy do to the wood? _______
Energy that is transmitted through space by light waves is called
radiation
.
The wood gets hotter because it gains
thermal energy
from the light waves.
Final Temperature
40
o
angle.
_______
o
C
Question 11
11.
Final Temperature
60
o
angle.
_______
o
C
Question 12
12.
Final Temperature
80
o
angle.
_______
o
C
Question 13
13.
Final Temperature
90
o
angle.
_______
o
C
Question 14
14.
Draw conclusions:
Why did increasing the angle of the beam of light cause the wood to heat up more?
Red Brick
Final Temperatures
Red Light
_______
o
C
Blue Light
_______
o
C
Green Light
_______
o
C
Red brick
reflects __________ light
and
absorbs
__________ light
Green Brick
Final Temperatures
Red Light
_______
o
C
Blue Light
_______
o
C
Green Light
_______
o
C
Question 20
20.
Green brick
reflects __________ light
and absorbs __________ light
Question 21
21.
Blue Brick
Final Temperatures
Red Light
_______
o
C
Blue Light
_______
o
C
Green Light
_______
o
C
Question 22
22.
Blue brick
reflects __________ light
and absorbs
__________ light
METAL
Inital Temperature
: 20.0
o
C
Final temperature (no glass cover): _______
o
C
Change in Temperatire _______
o
C
WOOD
Inital Temperature
: 20.0
o
C
Final temperature (no glass cover): _______
o
C
Change in Temperatire _______
o
C
Question 27
27.
WATER
Inital Temperature
: 20.0
o
C
Final temperature (no glass cover): _______
o
C
Change in Temperatire _______
o
C
Question 28
28.
BLACK BRICK
Inital Temperature
: 20.0
o
C
Final temperature (no glass cover): _______
o
C
Change in Temperatire _______
o
C
Question 29
29.
WHITE BRICK
Inital Temperature
: 20.0
o
C
Final temperature (no glass cover): _______
o
C
Change in Temperatire _______
o
C
Question 30
30.
Based on the results, which 2 substances do you think
reflected
the most light?
Metal Wood Water Black Brick White Brick
METAL
Inital Temperature
: 20.0
o
C
Final temperature (under glass): _______
o
C
Change in Temperatire _______
o
C
WOOD
Inital Temperature
: 20.0
o
C
Final temperature (under glass): _______
o
C
Change in temperature _______
o
C
Question 33
33.
WATER
Inital Temperature
: 20.0
o
C
Final temperature (under glass): _______
o
C
Change in Temperatire _______
o
C
Question 34
34.
BLACK BRICK
Inital Temperature
: 20.0
o
C
Final temperature (under glass): _______
o
C
Change in temperature _______
o
C
Question 35
35.
WHITE BRICK
Inital Temperature
: 20.0
o
C
Final temperature (under glass): _______
o
C
Change in temperature _______
o
C
Question 36
36.
The glass cover made each substance heat up __________