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Post by Teacher Bot on Nov 27, 2012 9:14:10 GMT -5
Monday 11/26
True or false - there are 206 bones in an adult human body and 300 bones in an infants body? Explain.
Tuesday 11/27
2) Where does sound travel faster; water or air?
Wednesday 11/28
3) What type of organism makes up the oldest known fossil?
Thursday 11/29
4) True or false- most of the dust in your home is made of human skin?
Friday 11/30
5) True or false - sterling silver is pure silver?
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Post by Alonda Weaver on Nov 27, 2012 9:22:07 GMT -5
Monday
The answer is false because you keep the same number of bones as you do when you're born. Unless there is a missing body part, the number of bones stay the same.
Tuesday
Sound travels faster in air because there is less mass to go through.
Wednesday
I believe the oldest known fossil is stromatolite. It's billions of years old.
Thursday
I think it's false because dust is mostly particles of bacteria building up.
Friday
The answer is false because pure silver is 99.9 silver and sterling silver is 92.5.
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Post by Mya Mays on Nov 27, 2012 9:24:07 GMT -5
Monday 11/26
True. A baby will have more bones then you but as they grow there bones fuse together.
Tuesday 11/27
Sound travels faster in the water because of the denser the material the higher the propagation rate.
Wednesday 11/28
The oldest know fossil is stromatolite.
Thursday 11/29
Friday 11/30
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Post by Brandon Lee on Nov 27, 2012 9:26:08 GMT -5
Monday:
False. I an infant has 300 bones at birth then where do the 94 bones it loses go before it is an adult?
Tuesday:
I think that sound travels fast in air because it has less dense atoms to go through.
Wensday:
I believe that the megalodon is the oldest known fossil because it is huge and lived long ago.
Thursday:
True when humans lose skin cells it mixes with dirt particle it creates dust.
Friday :
False sterling silver is less valueable than pure silver.
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