Showing category "Science" (Show all posts)

Knowing of Body Systems - Science Grade 5

Posted by Patcharin Sinthunavarat on Sunday, January 30, 2011, In : Science 
Digestive System

Head (Brain) and Nervous System

Musculoskeletal System


Circulatory System
 


 


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Year 5 - Science Key Vocabulary : The Earth, Sun and Moon

Posted by Patcharin Sinthunavarat on Sunday, July 4, 2010, In : Science 

1. An imaginary line through the Earth which runs from pole to pole

2. The force that pulls towards the centre of Earth.

3. The planet where we live.

4. The path an object takes around another object in space. It takes a year for the Earth to do this around the sun, 28 days for the moon to do this around the Earth.

5. The Earth's natural satellite that revolves around it in about 28 days.

6. A shape like a ball.

7. A system of planets which revolve around...


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Year 5 - Science Key Vocabulary : Change of State

Posted by Patcharin Sinthunavarat on Sunday, July 4, 2010, In : Science 

1. Materials that will not dissolve, for example sand in water

2. Something that dissolves, salt and sugar are soluble in water.

3. Cannot be seen or out of sight.

4. Solid liquid and gas are states. So a change of state could be from solid to liquid - when ice melts and turns into water.

5. To change to another state: a gas or vapour turning into a liquid state.

6. The act of condensing; when steam hits a cold surface it changes state from a gas to a liquid an...


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Year 5 - Science Key Vocabulary : Changing Sounds

Posted by Patcharin Sinthunavarat on Sunday, July 4, 2010, In : Science 

1. The size of a vibration or the height of the peaks and troughs of a wave.

2. This transmits vibrations from the outer ear to the small bones in the middle ear.

3. The number of times a wave vibrates in one second.

4. Materials which can prevent sound from travelling.

5. A device which can be used to show sounds as moving waves on a screen. The amplitude and frequency can then be measured.

6. How high or low a sound seems. Fast, high frequency vibrations give h

i...


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Science : Characteristics of materials

Posted by iampatpatt on Friday, April 16, 2010, In : Science 

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Science : Keeping Warm

Posted by iampatpatt on Friday, April 16, 2010, In : Science 

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Science : Rocks and soils

Posted by iampatpatt on Friday, April 16, 2010, In : Science 

Rocks and soils

Introduction

Rocks can be hard, soft, permeable or impermeable, depending on what type of rock it is. Slate, marble, chalk and granite all have different uses.

Different plants grow better in different types of soil.

Characteristics of rocks

Some rocks are harder than others. For example, granite is a very hard rock, but chalk is a very soft rock and wears away easily.

Some rocks, such as sandstone or chalk, let water soak through them. They are called permeable r...


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Science : Solids and liquids

Posted by iampatpatt on Friday, April 16, 2010, In : Science 

Solids and liquids

Introduction

Heat melts a solid and turns it into a liquid. Cooling freezes a liquid into a solid.

Different solids melt at different temperatures, some high some low. These are called their melting points.

Heating and cooling

Heating

Heat can change solids into liquids or gases.

  • Most solids melt into liquid when they are heated.

  • A liquid evaporates into a gas when it is heated.

Cooling

When we cool something we take heat away from it. Cooling changes a...


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Science : Reversible and irreversible changes

Posted by iampatpatt on Friday, April 16, 2010, In : Science 

Reversible and irreversible changes

Introduction

Irreversible changes, like burning, cannot be undone. Reversible changes, like melting and dissolving, can be changed back again.

Mixtures can be separated out by methods like filtering and evaporating.

Irreversible changes

A change is called irreversible if it cannot be changed back again. For example you cannot change a cake back into its ingredients again.

Irreversible changes are permanent. They cannot be undone.

In an irreversi...


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Science : Gases, liquids and solids

Posted by iampatpatt on Friday, April 16, 2010, In : Science 

Gases, liquids and solids

Introduction

Solids, liquids and gases have different properties.

Liquids and gases can flow. Solids keep their shape. Gases can be squashed

Gases

  • Gases are often invisible.

  • Gases do not keep their shape or always take up the same amount of space. They spread out and change their shape and volume to fill up whatever container they are in.

  • Gases can be squashed.

  • Heating a liquid can turn it into a gas.

  • Cooling a gas can turn it into a liquid....


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Science : Changing State

Posted by iampatpatt on Friday, April 16, 2010, In : Science 
 Changing state

Introduction

Solid, liquid and gas are called the three states of matter. Materials can be changed from one state to another by heating or cooling.

Water moves around the environment in the water cycle.

 

States of matter

Solid, liquid and gas are called the three states of matter.

Materials can be changed from one state to another by heating or cooling.

Heating

  • If ice (solid) is heated, it changes to water (liquid). This change is called melting.

  • If water (...


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