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Gizmos: Heat Absorbtion

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Last updated almost 4 years ago
38 questions
Link to this Gizmo
https://gizmos.explorelearning.com/index.cfm?method=cResource.dspView&ResourceID=655
Prior Knowledge/Warm Up
1
1
Activity A
1
1
1
1
Activity B
3
1
Activity C
2
1
Extra Credit
5
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.
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? _______

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
20o angle.
_______ oC
1
Question 10
10.
Final Temperature
40o angle.
_______ oC
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 75o
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 75o angle
3
Question 17
17.
Red Brick Final Temperatures

Red Light _______ oC
Blue Light _______ oC
Green Light _______ oC
2
3
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 75o
No Glass

For the change in temperature take
Final Temperature - Initial Temperature
2
2
2
2
2
1
Question 30
30.

Based on the results, which 2 substances do you think reflected the most light?

Metal Wood Water Black Brick White Brick
Experiment:
Using white light, heat up each of the following substances for 3 hours
Set angle to 75o
Click on Add glass cover

For the change in temperature take
Final Temperature - Initial Temperature
2
2
2
2
2
1
Question 36
36.
The glass cover made each substance heat up __________
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.

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.
Question 11
11.
Final Temperature
60o angle.
_______ oC
Question 12
12.
Final Temperature
80o angle.
_______ oC
Question 13
13.
Final Temperature
90o angle.
_______ oC
Question 14
14.

Draw conclusions:
Why did increasing the angle of the beam of light cause the wood to heat up more?

Question 18
18.
Red brick
reflects __________ light
and
absorbs
__________ light
Question 19
19.
Green Brick Final Temperatures

Red Light _______ oC
Blue Light _______ oC
Green Light _______ oC
Question 20
20.
Green brick
reflects __________ light
and absorbs __________ light
Question 21
21.
Blue Brick Final Temperatures

Red Light _______ oC
Blue Light _______ oC
Green Light _______ oC
Question 22
22.
Blue brick
reflects __________ light
and absorbs
__________ light
Question 25
25.
METAL

Inital Temperature: 20.0 oC

Final temperature (no glass cover): _______ oC

Change in Temperatire _______ oC
Question 26
26.
WOOD

Inital Temperature: 20.0 oC

Final temperature (no glass cover): _______ oC

Change in Temperatire _______ oC
Question 27
27.
WATER

Inital Temperature: 20.0 oC

Final temperature (no glass cover): _______ oC

Change in Temperatire _______ oC
Question 28
28.
BLACK BRICK

Inital Temperature: 20.0 oC

Final temperature (no glass cover): _______ oC

Change in Temperatire _______ oC
Question 29
29.
WHITE BRICK

Inital Temperature: 20.0 oC

Final temperature (no glass cover): _______ oC

Change in Temperatire _______ oC
Question 31
31.
METAL

Inital Temperature: 20.0 oC

Final temperature (under glass): _______ oC

Change in Temperatire _______ oC
Question 32
32.
WOOD

Inital Temperature: 20.0 oC

Final temperature (under glass): _______ oC

Change in temperature _______ oC
Question 33
33.
WATER

Inital Temperature: 20.0 oC

Final temperature (under glass): _______ oC

Change in Temperatire _______ oC
Question 34
34.
BLACK BRICK

Inital Temperature: 20.0 oC

Final temperature (under glass): _______ oC

Change in temperature _______ oC
Question 35
35.
WHITE BRICK

Inital Temperature: 20.0 oC

Final temperature (under glass): _______ oC

Change in temperature _______ oC