Ask Science Questions

how far is pouto from the sun?

hello
if you have any science questions you would like to ask, just type them here and I will answer them as soon as possible

Interesting question Jedrah!

When we see objects, we see them due to light being reflected off the object into our eyes. The light that is reflected back gives us the image.

Dark colours appear dark because they reflect less light. Light colours reflect more which is why they appear brighter.

Because they reflect less, the light that they don't reflect is absorbed into the material.

Light causes heat.

This is why you shouldn't wear black in summer because you'll get too hot, astronauts wear silver/white suits because the sun would fry them, and polar bears have black skin under their white fur so that they stay warm in the snow.

Hey Mr R,,
Jus here 2 ask if a dull or dark material is reflected by the Sun is it the colour it is because of the way it is reflected that it is a dull colour?

Thanks for that question Ramlah!

How Big is the Earth?

Earth is the third in distance from the sun and the fifth largest of the planets in diameter.
The earth is not a perfect sphere but is slightly flattened at the poles. The diameter of the earth measured around the North Pole and the South Pole is about 42 km (26 mi) less than the diameter of the earth measured at the equator.

The circumference of the Earth at the Equator is 24,902.4 miles or 40.076.5 km.

The diameter which is the distance across the center at the equator (equatorial diameter) is 7926.42 miles or 12,756.34 km.

The Polar diameter (measurement between the poles) is 7899.83 miles or 12,713.54 km.

Total surface area is 510,100,000 sq. km (196,950,000 sq. miles)

Volume is 1,083,230,000,000 cubic km (259,880,00,00 cubic miles)
Average density is (water=1) 5.52

Hope this helps!

hi! this site is cool, Mr Raven, I'm going to ask you a question, how big is the Earth?.

Hey peepz nd Mr Raven just here 2 saii kwl site im using this site 4 ma revision and al i can say is that itz reali helping me a lot
FANYOOO xxxxx

Hiya everybody kara here to say wicked site mr r.chow
see you

Hiya everybody Kara to say stay in school and do your best.

im lovin the new curriculom

hey yal wats up this website is crakin dol
big up to all my homies in sherwood


adios

helo yal wats crackin lackin dougz jus checkin on yur site an it is greezy likk me anyway im goin harris dis year so bi and give a shout 2 all my homies
GEEEEEEEEEEEEZ!

hiya mr raven its nicole day.
how are you i am missing sherwood nd i woz wonderin if you was all ok at sherwood. Missin you all loadz.
i cnt belive i am in year 8 now lol
cya

for my home work i had to find out what are gasis i still dont no

I hope that you are finding the site useful. If you have any questions please ask and i will try to answer them as soon as possible. Remember to work on the 50 facts!

hiya everyone, I don't know if you knew this but when boys are in their mum's tummy they are atually girls! Its true . see you in school and I hope your all enjoying your easter holidays! I kow I am.. I'm in school council by the way.. YAY!

how slow does the earth to spin on it axis

The Earth will make 1 complete turn on its' axis in 24 hours. Look at the 2nd activity in the 50 science facts.

if you could go the speed of sound in a car and you turned the head light on would the beames come out

how strong is a paper chain?

THE ANSER TO YOUR QUESTUON IS IT S BECAUSE IT IS IT IS CLOSER TO SPACE AND GETS COLDER

this is the best web I could ever have!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

how many times does your heart pump a day?

how fast does the earth per hour?

This web is so cool mr raven!

how does gas travel?

Good luck Mr.Raven with your new class 4R!

mr ravan im finding your website helpful

A typical desktop computer uses about 65 to 150 watts.

how much electricty is used to work a computer?

A bruise (medically referred to as a contusion) is caused when tiny blood vessels are damaged or broken as the result of a blow to the skin (be it bumping against something or hitting yourself with a hammer). The raised area of a bump or bruise results from blood leaking from these injured blood vessels into the tissues as well as from the body's response to the injury.

So in short a bruise is bleeding under the skin

I hope this explains why you had a bruise on your shoulder
By the way i hope it is better now.....

having a nice ester

This is a BRILLIANT website!!!!!!!!!!!!!! I wish i had a website like this one Mr Raven! Anyway Mr Raven you done a good job. Oh yeh just forgot did anyone help you make this website, or did you do it on your own? This looks like you done it on your own,because this website is cool!!!!!

this is a great website

Hi, this website is super cool.

This website is great!!!

, Bernice

good website

this the best web

this website is the best

Mr Raven I was on holiday and i banged my sholder and about ten minutes after i got a broze how are they formed

i like this web

mr Raven this is really cool.

when salt dissolves in water we can't see it but when the water evaporates we can see it. Do you know why?

Mr Raven
Is it true that there are sea shells on the mountain?
WHY?

It is true that shells have been found on the top of mountains in fact Charles Darwin was fascinated by some of the shells that he found on the tops of the mountains of South America during his trip aboard the H.M.S. Beagle. He wondered how they ended up so far away from the ocean in which they normally would be found. The reason for this is because thousands of years ago mountains would not have been so high and would have been covered by water. Over millions of years mountains become higher and rise out of the water but the fossils remain within the rock. To fully understand this you need to see how mountains are formed. Why not visit www.edu.pe.ca/southernkings/mountainmm.htm

how can adding more vineger to warm milk increase the size of the withe ball appear - this was one of the questions in our sats practice i got stuck on it
thank you

Hi mr.Raven,this is so cool and I never knew science could be fun

what microchip does a calculator work on?

why is there on a magnet there is a south and a north side i dont get y u hav it

could u remind me what condensations is again i forgot i think it is...................

Different types and age of calculators work with a range of chips so it is difficult to answer your question.

Condensation is when a gas turns into a liquid. Think about water vapour which turns to a liquid when touching the bathroom mirror.

how do computer devices work ?

how do computers work ?

Computers are made of many electronic components or parts. These components each have a special job and they all work together to make your computer operate. Some components are hidden inside the computer, where you can't see them. Others can be seen partly from the outside.


Power It Up!
Every computer needs a power supply, to take electricity from your house and convert it into a current that works for your computer. The electrical cord that comes out of your computer, comes out of the power supply. When it is plugged into the wall, electricity travels from the electrical wires in your house into the computer's power supply. When your computer is turned on, the power supply allows the converted electricity to travel to other components inside the computer.

Circuits
The motherboard gets its name because it is like a mother to all of the other circuit boards. Found at the bottom of a desktop case or the side of a tower case, the motherboard is the largest circuit board and has many smaller boards plugged into it. It holds all of the most important parts of the computer.
On the motherboard, you will find several expansion cards. Each of these cards has a special purpose. The sound card contains special circuits for operating the computer's sound. The video card handles graphics that are displayed on the monitor. There are also expansion cards for other computer components including the drives and ports.

The modem is an expansion card that allows computers to talk to each other. A modem plugs the computer in to a phone or cable line so that information can be transferred between computers. Current modems can run up to 56,000 bits per second. Don't know what a bit is? Don't worry, we'll get to that in a later lesson :)



The brain of a computer is the CPU or Central Processing Unit. Like a brain, it controls information and tells other parts what to do. The type of CPU in a computer also determines how fast that computer can operate. A CPU generates lots of heat, so there is usually a small fan nearby to cool it down.

A very important computer component is the BIOS chip. BIOS stands for Basic Input Output System. In very simple terms, the BIOS chip wakes up the computer when you turn it on and reminds it what parts it has and what they do.


RAM & ROM
Have you ever heard the terms RAM and ROM? These two terms sound very similar and can easily be confused by beginners. However, understanding what they mean and what they do can help you to remember.
RAM stands for Random Access Memory. RAM chips will remember what you tell them and can even change to remember new information. But, when the computer is turned off, RAM forgets everything you told it. This is why it is so important to save your work on a computer - if the computer gets turned off, RAM will lose all of your work!

ROM stands for Read Only Memory. ROM is good at remembering, but cannot change it's mind. It holds information that is built into it. ROM is like reading a library book - lots of information is there, but you can't change it (because you never write in a library book). RAM, on the other hand, is more like a journal - you can write information into the journal. But if you change your mind, you can erase and write in new information.


Ports
Ports are the places on the outside of the computer case where you plug in hardware. On the inside of the case, they are connected to expansion cards. The keyboard, mouse, monitor, and printer all plug into ports. There are also extra ports to plug in extra hardware like joysticks, gamepads, scanners, digital cameras and the like. The ports are controlled by their expansion cards which are plugged into the motherboard and are connected to other components by cables - long, flat bands that contain electrical wiring.

Disk Drives
Disk drives read information off of storage disks. The three most common disk drives are the hard drive, floppy disk drive and CD-ROM. In lesson 1, you learned a bit about the latter two, which are usually installed inside the front of your computer case so that you can get to them from the outside to load the software. The hard drive, however is hidden inside the computer because the disks are not meant to be removed. Information that you save on your computer is stored on these hard disks. You can learn more about storage disks in Lesson 4: Storage; but first, check out Lesson 3 to learn about bits and bytes.

what kind of oats do you mean on the science question

Oats are types of grain like corn and barley.

It would be difficult to seperate sand, saw dust and metal but you could do it. First you could use a magnet to take out all of the pieces of metal. Then you could use a filter/strainer to seperate the saw dust and the sand.

If the saw dust and sand were the same size it would be very difficult.

Good question!

What is condensation?

Condensation is when a gas changes into a liquid. An example of this is when you breath warm air out of your mouth onto a cold window. The gas gets cooled down quickly and turns into a liquid, which you can sometimes see dripping down the window. Condensation also occurs in the bathroom when the hot water tap is left running. Again you can see the condensation on the mirror or windows.

www.bbc.co.uk/schools/revisewise/science/materials/08_fact.shtml

if you have two soilids mixed with a liqiud(hot water) could the solids melt

If you have two solids in hot water they could melt. Imagine you put a solid piece of chocolate into hot water, it would melt. However, some solids melt at a much higher temperature. Take a piece of metal, for example, if you put it in hot water it will remain a solid.

how do you separate sand sawdust and little bits of metal

whats a consumer again?

Hi This website is really good

A consumer is something that eats something else.
Grass is a producer (makes its own food and does not eat anything)
Rabbit is a consumer (eats the grass)
Fox is a predator and consumer (nothing eats the fox and it eats the rabbit)

For more info www.wildanimalpark.co.uk/education/worksheets/pdf/KS2FOODCHAINS.pdf

What is filteration?

Filtration is where you seperate two or more substances using a filter. For example you may have a mixture if water and sand. To seperate the two you could pour the mixture through filter paper and the water would pass through but the sand wouldl get caught. This is filtration.

Filtration is often used to separate the solid and liquid parts of a mixture.

hi mr raven it is Fab

Does anyone know why there is snow at the top of mountains when their peaks are closer to the sun?