Previewing: The sun's effects on different materials

Investigating the Sun's Heat: Practice 2 Preview

-We will be completing this investigation on Wednesday during D block

Strand: Plan or follow the steps of an investigation to collect data about the relative warmth of objects made of different materials when they are exposed to the sun.

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​Wednesday, you will be completing your first investigation. These slides will prepare you for what we will do!

​The sun lamp will act as the sun. It is VERY HOT!!

DO NOT TOUCH THE SUN LAMP!

​​This is a SUN LAMP

​We will use this to take the temperature of the black and white paper after they have sat UNDER the sun lamp for a specific number of minutes.

​​This is a THERMOMETER

Multiple Choice

Should you touch the sun lamp?

• NO!

• Yes

Multiple Choice

What will we use this thermometer for?

• To take the temperature of the black and white paper after it has been under the sun lamp.

• take the temperature of the cat.

A HYPOTHESIS: is your best guess or prediction about what is going to happen.

I predict it will rain because of the dark clouds in the sky

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​What is a HYPOTHESIS?

Multiple Choice

What is a HYPOTHESIS?

• My best guess about what will happen

• watching cats

Which color paper will be the WARMEST after it stays under the sun lamp?

​Choose answer A or B

A. The black paper will be the WARMEST after it stays under the sun lamp for 10 minutes


B. The white paper will be the WARMEST after it stays under the sun lamp for 10 minutes.

​The black paper will feel the WARMEST after it stays under the sun lamp for 10 minutes.

​​Black Paper

​The white paper will feel the WARMEST after it stays under the sun lamp for 10 minutes.

​​White Paper

Procedure: What to do!

​Follow the steps below:

Step 1: Tape a piece of black paper within the BLUE square. (Student task)
Step 2: Tape a piece of white paper within the BLUE square. (Student task)
Step 3: Turn the sun lamp on. (Teacher task)
Step 4: Set the stop watch for 10 minutes (Student task)

Multiple Choice

Step 1: Tape a piece of black paper within the BLUE square. (Student task)
Step 2: Tape a piece of white paper within the BLUE square. (Student task)

Step 3: Turn the sun lamp on. (Teacher task)
Step 4: Set the stop watch for 10 minutes (Student task)

HOW MANY STEPS ARE THERE?

• 4 STEPS

• 1 STEP

1. Take the temperature of the black paper

2. Take the temperature of the white paper
Write the number in the GREEN column

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​What should I do after the alarm has gone off?

Multiple Choice

What should I do when the alarm has gone off?

• Use the thermometer to take the temperature of both papers

• throw the paper away

Before starting the timer again,
- TOUCH each paper with your hand.
-Circle how it feels on your recording sheet.

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​How does the paper feel?

​Make sure to record the temperatures from the thermometer into the DATA table

​​Set the timer 2 more times .

​Which color paper was the WARMEST TEMPERATURE at the end of 30 minutes?

a. the black paper was the WARMEST.

b. the white paper was the WARMEST.

​​Answer the QUESTION:

Multiple Choice

Make your best guess: Which colors hold the most HEAT?

• darker colors

• lighter colors

Darker colors absorb MORE HEAT than lighter colors

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What we know:

Multiple Choice

Which colors hold the most HEAT?

• darker colors

• lighter colors

Multiple Choice

The sun lamp in the investigation acts as the

• sun's energy

• moon's energy