Science: Rainbows

What makes rainbows?? 

You might of thought once,   

well the answer is water and sun!!

Turn the hose on, on a sunny day, 

what do you get?

 "A rainbow" you say!!!!!!  

Rainbows are colours usually in the sky formed by water and sun. It is arced shape, just like a semi circle. Well, actually, the rainbow is a full circle but from most peoples view off the ground they see a semi circle. Most rainbows we see in the sky now will be a "primary rainbow" where the colour red can be seen on the outside (top)  through to violet on the inside (bottom). A rainbow is not an object, it can't physically be touched or approached. A double rainbow is where a second, much fainter arc can be seen outside of the primary arc. This is caused by the light reflecting twice inside the water droplets. As a result of this double reflection the colours of the second arc are inverted with violet on the outer edge and red on the inner edge. did you know that no two people see the same rainbow, in fact even our individual eyes see slightly different rainbows. If someone appears to be standing under a rainbow you can see, they will see a different rainbow at the same angle but further away. Isn't that amazing? It has the colours red, orange, yellow, green, blue and purple. To see a rainbow you must have your back to the sun or it won't be visible. Did you know you can never get to the end of a rainbow, when you move the rainbow moves too.

Seeing through things

What I learnt...

In my science I have learnt 

What opaque means-it means that no light can go through it and it makes a shadow.

What Translucent means- some light can go through.

What transparent means- all light can go through

Light bounces off shiny surfaces like mirrors.

Some bright things reflect back at you.

Light travels faster then anything.

Light travels in a straight line.

Shadows are from the opposite side of the sun.

Homework A-Z science

This is homework-Try write an A to Z list of scientific words. Here are mine:


Aluminium
Bromine
Chemicals
Dioxide
Erbium
Fluorine
Gallium
Holmium
Iron
Jupiter
Krypton
Laboratory
Measure
Nitrogen
Osmium
Pluto
Quark
Radiology
Sodium
Titanium
Universe
Vanadium
Weigh
Xenon
Ytterbium
Zinc

My List Of Sciene All Around Me

This is for my homework. My challenge is to find as many different ways in which science is happening all around us. I have to Make a list and describe the processes. These are mine.

1. Walking to school.
2. Listening to music.
3. The TV. We can now watch cartoons and the news on a big screen.
4. Internet. People used to have to search it up in encyclopaedias.
5. Computers. It is electronic.
6. I phones. They are electronics.
7. Radio. We can listen to the news.
8. Microwave. They used to have to warm up their food over a fire.
9. Freezers. Before our defrosting freezers people had to scrape out the frost from the freezers.
10. Fridge. Now we can keep our food cold.
11. Oven. It used to be over a fire now we use gas.
12. X-rays. Now the dentist can check your teeth and the doctors can check your bones.
13. Hospital gear. Now the doctors can use devices and special machines.
14. Cars. The cars are moving to electric rather than petrol.
15. Digital watches. We now don't have to rewind the clock everyday and we use very thin batteries.  
16. Lights. Lights now use electricity so we don't have to keep using matches.
17. Solar panels. All you have to do now is put them under the sun.
18. Weed killer. Scientifically formulated to kill weeds and let the grass grow.
19. Medicine.  We don't have to use plats anymore.
20. Robots. Scientifically made so we don't have to do things our selves.
21. Traffic lights. They make less crashes.
22. Magnifying glass. It helps read small words from a further distance.
23. Windows. They allow to keep the warmth in and still be able to see through.
24. Ear phones. You can listen to anything on your phone without other people hearing.
25. Head phones. You can listen to anything on a computer without other people hearing.
26. Phones. You can talk to people that are far away from you.
27. Toilet paper. Toilet paper used to be used with leaves and stones.
28. Pens. People used brush and ink.
29. White boards. People used to use chalk boards.
30. White board pens. People used to use chalk. 
31. Smart boards. Now we can show lots of people at the same time off a big screen rather than a small screen on a computer.
32.  Paper. People used to write on fresh bamboo.
33. Wax. Scientist made wax for candles.
34. Mirrors. They reflect off the sun.
35. Water purifier. The scientist made a machine that makes seawater or salty water into plain drinking water.
36. Calculator. It was to hard for them to do it in their head.
37. Torches. People use it for light instead of using fires and torches. (Also lamps as well).
38. Washing machine powder. Scientifically formulated to get dirt and stains off clothes.
39. Power lines. They transport electricity.
40. Aeroplanes. They have aluminium wings. The pilot also has to work out how much fuel in the wings, that is science.
41. Air Conditioning. It uses science to work out if the air conditioner needs hot or cold air.
42. Opening heavy jars. It uses power and energy.