Archive for September, 2011

Evaporation

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Today we used the beautiful weather to see how the process of evaporation dries our wet towels.
We were suprised to see that 100g of water had evaporated after just 20 minutes.

(A few of us learned how to hang washing on a washing line too!!)

The weather today


The barometer showing ‘fair’ for the first time in quite a while. This means that the atmospheric pressure has increased. 

The other picture shows the view from our classroom door. Hardly a cloud in the sky.

Weather related facts from today’s lesson

We have discovered some things about the weather during independent time.

The states of water

Today we discovered that water appears in three different states. These are frozen as ice, liquid as water, vapour  as water vapour. We also learned that if we heat water up it evaporates at 100 degrees Celsius and becomes a gas.

We also used a piece of cool glass to condense water vapour, turning it back into water.

We really enjoyed this lesson especially comparing how quickly the ice melted at room temperature to holding it in our hands (body temperature).

Enquiry questions for our topic on weather

We have just started our topic on the weather and we have been thinking about what we would like to learn. We have come up with some questions that we would like answers to:-

How does rain and sun make a rainbow?
How do icicles form?
What are the different types of lightning?
Why does the weather change?
How are clouds made?
What makes thunder and lightning?
How is a tornado formed?

Question from today’s science lesson…

What are the individual gases that make up the air we breathe?

Science

Today we have been looking at gases in science.

showing that  even though we can’t see it, it is there.