Title: Solar tea kettle

Ching Yu

Contents

Purpose Hypothesis Materials I used Procedure Observations Conclusion Big Idea

Purpose

To understand if the black bottle heats up the water inside faster or the clear glass bottle heats the water faster.

Hypothesis

I think the black bottle will heat the water faster than the clear glass one because the black glass absorbs the heat sun’s energy faster.

Materials

Tape Tea bag Two glass bottles Thermometer Two sheets of black paper

Procedure

1. First, tape two sheets of black paper on one of the glass bottle.

2. Then, put two teabags inside each bottle.3. After, fill cold water in each bottle.4. Put the bottles on the sunny windowsill for at least

six hours.5. Test the temperature of the water every two hours

to see which bottle heats up quickest.6. Watch the water turn brown as the tea brews.

Results and Observations

This is the bottles absorbing the sun.

I am testing the temperature of the water.

Results and Observations

I saw that the sun’s energy shines in the bottles and I took thethermometer to see which bottle heats up faster. I saw the tea inside the black bottle turn brown first and the temperature is going higher and faster. The clear glass bottle turn brown slower and the temperatureis going slower and lesser. The clear glass bottle temperature is too lowso the thermometer did not show me the temperature. The black bottle temperature was 103 farenheit.

Results and Observations

I am looking at the tea inside the bottle and see which tea brews up faster.

I am testing the temperature of each bottle.

Conclusion

In this experiment, I have learnt that the black bottle heats up the quickest because the black bottle absorbs the sun’s energy quickest so I can see that the tea brews faster.

Big Idea

After this experiment, I know that the black bottle heat up faster and the clear glass bottle heat up slower.

In our life, when it was summer it was very hot and we should wear lighter color clothes so we won’t be that hot and we can heat up slower. But if we wear darker color clothes in summer we will heat up faster so we might be hotter than other people. But in winter, it was cold so we can wear darker color clothes and we can keep our body warmer. If you wear light color clothes in winter, it might be colder than wearing dark color clothes.