Difference between revisions of "Rock"
| Line 14: | Line 14: | ||
==Key Stage 2== | ==Key Stage 2== | ||
===Meaning=== | ===Meaning=== | ||
| − | '''Rock''' is a hard, stiff and firm material made of [[Crystal|crystals]] or [[Grain|grains]]. | + | '''Rock''' is a hard, stiff and firm material made of [[Rock Crystal|crystals]] or [[Rock Grain|grains]]. |
===About Rock=== | ===About Rock=== | ||
| − | : '''Rock''' is made from [[ | + | : '''Rock''' is made from [[Rock Grain|grains]] which are tiny pieces of rock that are stuck together. |
| − | : Some '''rocks''' have [[Crystal|crystals]] inside them which are grains that have sharp edges. You can often see crystals because they are shiny and sparkle like glitter. | + | : Some '''rocks''' have [[Rock Crystal|crystals]] inside them which are grains that have sharp edges. You can often see [[Rock Crystal|crystals]] because they are shiny and sparkle like glitter. |
| − | : The shape of [[Grain|grains]] in the '''rock''' depends on how it was formed. | + | : The shape of [[Rock Grain|grains]] in the '''rock''' depends on how it was formed. |
| − | : The size of [[Crystal|crystals]] also depends on how the '''rock''' formed. | + | : The size of [[Rock Crystal|crystals]] also depends on how the '''rock''' formed. |
| − | : '''Rock''' formed at the bottom of a lake or the sea has rounded [[ | + | : '''Rock''' formed at the bottom of a lake or the sea has rounded [[Rock Grain|grains]] inside. |
| − | : '''Rock''' formed near [[Volcano|volcanoes]] has lots of crystals. | + | : '''Rock''' formed near [[Volcano|volcanoes]] has lots of [[Rock Crystal|crystals]]. |
===Examples=== | ===Examples=== | ||
| Line 31: | Line 31: | ||
|[[File:Sandstone.png|center|200px]] | |[[File:Sandstone.png|center|200px]] | ||
|- | |- | ||
| − | | style="height:20px; width:200px; text-align:center;" |This limestone has lots of rounded grains and was formed at the bottom of the ocean. | + | | style="height:20px; width:200px; text-align:center;" |This limestone has lots of rounded [[Rock Grain|grains]] and was formed at the bottom of the ocean. |
| − | | style="height:20px; width:200px; text-align:center;" |This mudstone formed at the bottom a lake and has rounded grains. | + | | style="height:20px; width:200px; text-align:center;" |This mudstone formed at the bottom a lake and has rounded [[Rock Grain|grains]]. |
| − | | style="height:20px; width:200px; text-align:center;" |Sandstone is made of rounded grains of sand stuck together. | + | | style="height:20px; width:200px; text-align:center;" |Sandstone is made of rounded [[Rock Grain|grains]] of sand stuck together. |
|- | |- | ||
|[[File:Basalt.png|center|200px]] | |[[File:Basalt.png|center|200px]] | ||
| Line 39: | Line 39: | ||
|[[File:Quartz.png|center|200px]] | |[[File:Quartz.png|center|200px]] | ||
|- | |- | ||
| − | | style="height:20px; width:200px; text-align:center;" |This basalt has lost of very small crystals inside it and formed form a volcano. | + | | style="height:20px; width:200px; text-align:center;" |This basalt has lost of very small [[Rock Crystal|crystals]] inside it and formed form a [[volcano]]. |
| − | | style="height:20px; width:200px; text-align:center;" |Granite formed from magma stuck underground near a volcano and has crystals inside it. | + | | style="height:20px; width:200px; text-align:center;" |Granite formed from [[magma]] stuck underground near a [[volcano]] and has [[Rock Crystal|crystals]] inside it. |
| − | | style="height:20px; width:200px; text-align:center;" |Quartz is a very large | + | | style="height:20px; width:200px; text-align:center;" |Quartz is a very large [[Rock Crystal|crystals]] rock formed near [[Volcano|volcanoes]]. |
|} | |} | ||
Latest revision as of 16:01, 12 August 2018
Contents
Key Stage 1
Meaning
Rock is a hard, stiff and firm material. The objects known as 'rocks' are made out of the material rock.
About Rock
Rock is used to make buildings because it is very hard and strong. There are many different kinds of rock. Some are shiny, others are dull. Some are smooth and other are rough, but they are all hard, stiff and firm. They cannot be bent or stretched.
Key Stage 2
Meaning
Rock is a hard, stiff and firm material made of crystals or grains.
About Rock
- Rock is made from grains which are tiny pieces of rock that are stuck together.
- Some rocks have crystals inside them which are grains that have sharp edges. You can often see crystals because they are shiny and sparkle like glitter.
- The shape of grains in the rock depends on how it was formed.
- The size of crystals also depends on how the rock formed.
- Rock formed at the bottom of a lake or the sea has rounded grains inside.
- Rock formed near volcanoes has lots of crystals.
Examples
 |
 |
 |
| This limestone has lots of rounded grains and was formed at the bottom of the ocean. | This mudstone formed at the bottom a lake and has rounded grains. | Sandstone is made of rounded grains of sand stuck together. |
 |
 |
 |
| This basalt has lost of very small crystals inside it and formed form a volcano. | Granite formed from magma stuck underground near a volcano and has crystals inside it. | Quartz is a very large crystals rock formed near volcanoes. |