Unit 5: Part 1

From the leaves, water, in the form of vapor, is released into the atmosphere.

As water vapor rises, it cools into tiny water droplets. This is called condensation.

When evaporation occurs, water turns from a liquid into a gas, or vapor.

They live in the desert. It’s a beautiful place, with clear blue skies and tall mountains, but there is hardly any precipitation there.

Runoff from backyards, city streets, and farms dumps dirt and harmful chemicals into lakes, rivers, streams, and ponds.

Did you know that there is the same amount of water now as there was 100 million years ago when dinosaurs walked the Earth? The same water keeps going through a cycle. This constant movement of water is called the water cycle.

A watershed is a group of habitats that surround a river or stream.

When you have access to something, you can get or use it. A library offers access to many books.

A consequence is the result of an action. A flood is a consequence of heavy rain.

When you turn off lights, you are practicing conservation. You are using energy carefully.

When you deplete something, you use it up. They depleted the forest of trees.

Shortage is when you don't have enough. In a water shortage, the grass turns dry and brown.

When you want to explain something, start with the most important idea. This is called the main idea. Then give details to add more information. Details tell more about the main idea.

A science feature is a nonfiction text about the natural world. Science features often include tables and other text features that give information visually.

A table is made up of facts and numbers that are organized in rows and columns. Tables can help you quickly find and compare information.

An analogy has two word pairs that are related in the same way.

Adjectives describe, or tell about, nouns.