Difference between revisions of "Light Year"
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| − | The distance [[light]] can travel in one [[Year|year]] in space. | + | ==Key Stage 3== |
| + | ===Meaning=== | ||
| + | A [[Light Year]] is the distance [[light]] can travel in one [[Year|year]] in space. | ||
| + | |||
| + | ===About Light Years=== | ||
| + | : A [[Light Year]] is a [[distance]]. | ||
| + | : [[Scientist]]s use [[Light Year]]s as a [[unit]] for extremely large [[distance]]s. | ||
| + | : A [[Light Year]] is around 9,461,000,000,000,000 [[metre]]s. Since [[star]]s are much further away than this it doesn't make sense to write the [[distance]] in [[metre]]s so [[scientist]]s use the [[Light Year]]. | ||
| + | : The next nearest [[star]] to the [[Earth]], after [[The Sun]], is [[Alpha Centauri]] which is 4.23 [[Light Year]]s away. | ||
| + | : Our [[The Solar System|Solar System]] is in a [[galaxy]] called [[The Milky Way]] but the next [[galaxy]], [[Andromeda]] is 2,000,000 [[Light Year]]s away. | ||
| + | |||
| + | ==Key Stage 4== | ||
| + | ===Meaning=== | ||
| + | A [[Light Year]] is the distance [[light]] can travel in one [[Year|year]] in space. | ||
| + | |||
| + | ===About Light Years=== | ||
| + | : A [[Light Year]] is a [[distance]]. | ||
| + | : [[Scientist]]s use [[Light Year]]s as a [[unit]] for extremely large [[distance]]s. | ||
| + | : A [[Light Year]] is around 9,461,000,000,000,000 [[metre]]s. Since [[star]]s are much further away than this it doesn't make sense to write the [[distance]] in [[metre]]s so [[scientist]]s use the [[Light Year]]. | ||
| + | : The next nearest [[star]] to the [[Earth]], after [[The Sun]], is [[Alpha Centauri]] which is 4.23 [[Light Year]]s away. | ||
| + | : Our [[The Solar System|Solar System]] is in a [[galaxy]] called [[The Milky Way]] but the next [[galaxy]], [[Andromeda]] is 2,000,000 [[Light Year]]s away. | ||
| + | |||
| + | ==Beyond the Curriculum== | ||
| + | {{#ev:youtube|https://www.youtube.com/watch?v=Op3AYaJc0Xw}} | ||
| + | |||
| + | ===References=== | ||
| + | ====AQA==== | ||
| + | |||
| + | :[https://www.amazon.co.uk/gp/product/0008158770/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=0008158770&linkCode=as2&tag=nrjc-21&linkId=ec31595e720e1529e49876c3866fff6e ''Light year, page 274, GCSE Physics; Student Book, Collins, AQA ''] | ||
Latest revision as of 09:10, 8 November 2019
Contents
Key Stage 3
Meaning
A Light Year is the distance light can travel in one year in space.
About Light Years
- A Light Year is a distance.
- Scientists use Light Years as a unit for extremely large distances.
- A Light Year is around 9,461,000,000,000,000 metres. Since stars are much further away than this it doesn't make sense to write the distance in metres so scientists use the Light Year.
- The next nearest star to the Earth, after The Sun, is Alpha Centauri which is 4.23 Light Years away.
- Our Solar System is in a galaxy called The Milky Way but the next galaxy, Andromeda is 2,000,000 Light Years away.
Key Stage 4
Meaning
A Light Year is the distance light can travel in one year in space.
About Light Years
- A Light Year is a distance.
- Scientists use Light Years as a unit for extremely large distances.
- A Light Year is around 9,461,000,000,000,000 metres. Since stars are much further away than this it doesn't make sense to write the distance in metres so scientists use the Light Year.
- The next nearest star to the Earth, after The Sun, is Alpha Centauri which is 4.23 Light Years away.
- Our Solar System is in a galaxy called The Milky Way but the next galaxy, Andromeda is 2,000,000 Light Years away.