Sunday, 4 December 2011
The Moon is the brightest objects in the night sky.However,it does not emit light.The Moon appears bright at night because it reflects light from the Sun to the Earth.
From the Earth,the Moon looks like it is changing its shape.Actually it does not.It is caused by the different positions of the Moon that we see from the Earth.This is called the phases of the Moon.There are four major phases of the Moon.
Posted by choosiowling at 01:38
Sunday, 27 November 2011
The Earth takes 24 hours to make one complete turn.
Why do we have day and night?
We have day and night because the Earth rotates. It spins on its axis, which is an imaginary line passing through the North and South Poles.
The Earth spins slowly all the time, but we don't feel any movement because it turns smoothly and at the same speed.
How long does it take the Earth to turn around?
The Earth takes a whole day (24 hours) to makea complete turn.
Why is the Sun in the sky at some times and not at other times?
At any time half of the Earth faces the sun. This part has day. The other half of the Earth faces away from the Sun. It receives no light. It is dark and has night.
The sun is the source of light for day.
Why does the sun seem to move across the sky?
The Sun does not move. It seems to move across the sky starting in the east in the morning, moving toward the south at noon, and then toward the west as the day ends.
It is the Earth turning that makes it seem as though the Sun is moving.
Posted by choosiowling at 19:13
Saturday, 26 November 2011
Scientists have calculated that the Sun is one hundred times the size of Earth.Earth is four times the size of the Moon.
The distance from Earth to the Sun is 400 times the distance from Earth to the Moon.
Do You Know?
Long long ago,it was believed that the Sun was 70cm in diameter.We know that it is 1392 000kn in diameter.
Posted by choosiowling at 20:55
Friday, 25 November 2011
The sun and the nine planets are part of the Solar System.The nine planets are Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune, and Pluto.The Sun is in the center of the Solar System.All the nine planets move around the Sun in a large oval path.The planets also spin by itself.
Posted by choosiowling at 19:30
Posted by choosiowling at 18:26
It is too close to the sun.The temparature is too hot to support life.
A great amount of the heat from the Sun is trapped in its atmosphere.This makes it hotter than Mercury.
It has water,air and a suitable temperature to support life.
Almost all of its water is frozen.Scientists have no found any life there.
Mercury,Venus,Earth and Mars are the four plannets that are the nearest to the Sun.They are called the inner planets.All these plants are made of rocks.Each of the inner planet has an atmosohere.The atmosphere of Earth contains air which is suitable for living things to survive.The atmosphere of the other inner planets is very thin and poisonous to living things.
It is so big that all the other planets could fit inside it.
Saturn has three wide rings.They can be seen with a telescope.
Unlike the other planets,Uranus is lying on its side as it goes round the sun.
Neptune is covered with a blue ocean of liquid methane.
Pluto is very cold because it is very far from the sun.
The outer planets are Jupiter,Saturn,Uranus,Neptune and Pluto.They are mainly made of gases.Their temperature is too cold to support life.
The position of Earth from the Sun is just right for it to receive enough heat to support life.It has water and air too.These are needed to support life.The other planets either receive too little or too much heat.They also do not have a suitable atmosphere for living things to survive.
Posted by choosiowling at 06:42
Friday, 14 October 2011
Southern Cross can be seen as a brilliant cross in the southern sky.Southern Cross shows the South Pole.
Big Dipper is a group of seven bright stars that forms a pattern of a handle and as bowl.Orion and Big Dipper show the North Pole.
Southern Cross and Big Dipper can be seen between April and June.
Scorpion is seen with its head,long body,tail and stinger.It can seen between June and August.
Orion is seen as a hunter with a belt and sword.It can be seen between December and February.
Posted by choosiowling at 22:36
Tuesday, 11 October 2011
On the Insert tab, the galleries include items that are designed to coordinate with the overall look of your document. You can use these galleries to insert tables, headers, footers, lists, cover pages, and other document building blocks. When you create pictures, charts, or diagrams, they also coordinate with your current document look. You can easily change the formatting of selected text in the document text by choosing a look for the selected text from the Quick Styles gallery on the Home tab. You can also format text directly by using the other controls on the Home tab. Most controls offer a choice of using the look from the current theme or using a format that you specify directly. To change the overall look of your document, choose new Theme elements on the Page Layout tab.
Posted by choosiowling at 00:14