Term+1+Sunsmart+science

** Here are some experiments we explored. ** ** What Absorbs More Heat? ** When you're out in the sun on a hot summers day it pays to wear some light colored clothes, but why is that? Experiment with light, color, heat and some water to find out. 2 identical drinking glasses or jars Water Thermometer 2 elastic bands or some sticky tape White paper Black paper
 * We are learning about the sun and how to be sunsmart. **
 * What you'll need: **

**Instructions:** Wrap the white paper around one of the glasses using an elastic band or sticky tape to hold it on. Do the same with the black paper and the other glass. Fill the glasses with the exact same amount of water. Leave the glasses out in the sun for a couple of hours before returning to measure the temperature of the water in each. **What's happening?** Dark surfaces such as the black paper absorb more light and heat than the lighter ones such as the white paper. After measuring the temperatures of the water, the glass with the black paper around it should be hotter than the other. Lighter surfaces reflect more light, that's why people wear lighter colored clothes in the summer, it keeps them cooler.

**SunSmart sausage science**

 Thinking Processes

 Science

VELS Levels 2 and 3

VELS Domain

 Health & Physical Education

 Personal Learning


 * Materials**

 8 x thick sausages

 Labels for each sausage (e.g. Sausage 1)

 SPF 30+ broad spectrum sunscreen

 Low SPF sunscreen (e.g SPF 5, 10 or 15)

 Oil

 Plastic food wrap

 Newspaper

 Silver foil

 t-shirt material

 Paper towel


 * Instructions**

1. Choose a bright, warm, sunny day when the SunSmart UV Alert predicts high UV Index levels. [Visit sunsmart.com.au to find out the sun protection times.]

2. You need 8 sausages

 Sausage 1 - apply SPF 30+ broad spectrum sunscreen to the sausage

 Sausage 2 - apply a low factor sunscreen to the sausage

 Sausage 3 - apply oil to the sausage

 Sausage 4 - wrap the sausage in plastic food wrap

 Sausage 5 - wrap the sausage in newspaper

 Sausage 6 - wrap the sausage in silver foil

 Sausage 7 - wrap the sausage in t-shirt material

 Sausage 8 – Place this sausage on a paper towel

3. After you have organised each of the 8 sausages, place them in full sun where they will not be disturbed for an hour. Make sure each sausage is near their label so you don’t forget which sausage is which!

4. Predict what you think will happen to each sausage. Write down your predictions.

5. After the hour, remove the sausages and observe any changes that have occurred.

6. Record your observations.

 What happened to each sausage?

 Why do you think this happened?

 Were your predictions correct?

7. What does this experiment teach us about our own skin? What is the best way to protect it?