The Properties of Air

The properties of air

Air has different properties.

• Air is invisible. It has no color.

• Air has no shape. It takes the shape of its container, like all gases. Air occupies the greatest possible space.

• Air has no taste or smell. 

• Air has weight. A balloon with air inside weighs more than a balloon with no air inside.

Hot air weighs less than cold air. There is hot air in hot air balloons. This is why they go up .

Means of Transport vocabulary games

Click on the image to go to the web site with the games.

           

Unit 5 Grammar Review

All living things need air

All living things need air

The Earth’s atmosphere is made up of air. Air is a mixture of different gases. The main gases are nitrogen, oxygen and carbon dioxide. All living things need air to survive.

• Animals and people need air to breathe. We breathe oxygen into our lungs and breathe out carbon dioxide. Fish take in air from water through their gills. Aquatic mammals, such as whales and dolphins, come to the surface of the water to breathe in air.
• Plants need carbon dioxide from air to make their food. They release oxygen into the atmosphere.

Introduction video to the Air and the Athmosphere

SCIENCE UNIT 8 - AIR

UNIT CONTENT 
Content objectives

1.  Understanding that air is necessary for life 
2.  Appreciating the uses of air
3.  Analyzing the characteristics of air
4. Knowing the composition of air
5. Learning about the atmosphere, its functions, and some atmospheric phenomena 
6. Appreciating the importance of breathing clean air

Language objectives

1. Describing the uses of air: to breathe; in tyres; for pushing sailing boats
   
2. Stating facts: zero conditional: If we burst a balloon, the air escapes.
   
3. Making comparisons: It weighs less than...; there is more ... than ...
   
4. Describing a hypothetical situation: 2nd conditional: If there were ... the Sun would burn ...
   

Contents

CONCEPTS	PROCEDURES	ATTITUDES
The air: importance, composition, physical characteristics The atmosphere: the layer of gases surrounding the Earth The atmosphere and its functions: filters the Sun’s rays and has the oxygen we need to breathe Atmospheric phenomena: precipitation, wind, storms	Interpret diagrams Identify everyday situations in which air is useful to people Apply the characteristics of gases to air Associate oxygen in the atmosphere with life Analyse why the atmosphere is necessary for living things Identify some atmospheric phenomena	• Appreciate the importance of breathing clean air

EARTH DAY

Today (April 22) we celebrate Earth Day. We made this simple and fun activity in the art class.

1. Color the Earth and cut it out
2. Trace both hands in a piece of paper, cut them out and stick them to the Earth
3. Write 5 things you can do to help save the Earth
4. Glue everything together on a frame.
   
   
   
   
   
   
   
   Idea from: http://boymamateachermama.com

Unit 7 Review: Water

Here is a quiz about the water unit. At the end you can find the answers.

Water (review) from David Santos

The three states of water

THE THREE STATES OF WATER

Water exists in three states: liquid, solid and gas.

• Rain, rivers and oceans are examples of water in a liquid state.
• Ice, snow and hailstones are examples of water in a solid state.
• Water vapor is a gas.

Water can change states.

Water changes from one state to another when it's temperature changes.

• When liquid water is cooled to below 0°C, it changes into ice. This is solidification.
• When ice is heated, it changes into liquid water. This is melting.
• When liquid water is heated, it changes into water vapor. This is evaporation.
• When water vapor cools, it changes into liquid water. This is condensation.

The Water Cycle

THE WATER CYCLE

1. 1  From the oceans to the clouds 
   
   Water is continually moving around the Earth. This causes the water cycle.
   The water cycle begins when water from the oceans, lakes and rivers heats up and evaporates to form water vapor. Water vapour passes into the cold atmosphere. The cold temperature makes the water vapour cool down and condense. Condensed water in the atmosphere turns into tiny water droplets and forms clouds. Clouds move across the sky with the wind.
   
   
2. 2  From the clouds to the land
   
   As clouds move across the sky, the tiny water droplets in the clouds join together to form larger drops. These large drops of water fall to the land as rain. When rain freezes, it falls to the land as snow or hail.
   
   
3. 3  From the land to the sea
   
   When rain falls on the land, it forms streams. Streams flow into rivers. Rivers flow into seas and oceans. When snow melts, it flows into the streams and rivers and finally reaches the sea. Sometimes, rainwater and melted snow sink deep into the ground to form aquifers. Water from wells and springs comes from aquifers. 
   
   
   
   
   

Spelling List #23

SPELLING LIST #23 'ss' / 'zz'

1. buzz
2. fizz
3. fuzz
4. puzzle
5. dizzy
6. less
7. cross
8. miss
9. floss
10. confess
11. dessert
12. crossroads