Page 13 - York Global Science 6 - Physical Science

The book also includes

feature lessons that

show you how Science

is used in the world
around you. We hope
Opener Problem Revisited that you en joy these Feature lesson is woven throughout each
grade; encouraging you to consider real world
pages as well as being application of Science across four key areas:
able to apply your careers, ethics, society and the environment.

learning.

Physical Science
3 obs in Science: Tracking Earth’s Water Let’s Learn

Hydrologists are scientists who study water on Earth. They look at how
water is used and where it is.
There is a lot of water on Earth and this water is always recycled.
Sometimes, the water is not in the right place at the right time for people to
Objectives use.
It is very important to understand the water cycle because it helps to know
how water moves on and around the Earth. The water cycle explains where
➜ ➜ Investigate how water changes from one state to another, relating it to water goes, how it gets there, and what happens to it at different parts of
heat gain or loss. (How climate scientists use data on water temperature the cycle.
and forms to track changes to the Earth.)
➜ ➜ Describe the concepts of the boiling point of water, the freezing point of
water, and the melting point of ice at room temperature.
condensation
Vocabulary precipitation evaporation
• Acid rain • Freeze • Precipitation
• Climate change • Freezing point • Rainfall
• Coastal • Hydrologist • Recycle
• Drought • Melt • State
• Evaporation • Polar regions • Water cycle
• Flood • Pollution • Water vapour
water cycle
Let’s Start Think!
Look at the picture of the water cycle and find the changes in state that
What is a hydrologist? occur.
What makes these changes in state?
Explain how the water cycle works.

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A glossary at the end of the unit shows you what all

the keywords mean.

We wish you well in your Science classes, and we

hope that you en joy studying this sub ject as much as
we en joy writing about it!

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