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-   -   Easy Quiz (For elementary school) (http://classroom.all-science-fair-projects.com/forum/showthread.php?t=1717)

dreamerofeternity 03-14-2006 02:33 PM

Easy Quiz (For elementary school)
 
1) Does hot air go up or down?
2) The center of the earth is called the _____.
3) Is the ocean salty?
4) What gas do we need to live? (we breath it in)?
5) Does oil and water mix?
6) What does it mean for a species to be extinct?

All Knowing 03-27-2006 07:33 AM

1)Up
2)Core
3)yes
4)oxygen
5)no
6)for an animal species to die away.


ok im in 9th grade u got me but i thought it would be so much fun:D

dreamerofeternity 05-04-2006 03:37 PM

Okay, you answered all correctly...

The challenge is then, why do these things occur (eg why does hot air go up, why doesn't oil and water mix, etc),

satfire311 05-04-2006 04:30 PM

oil and Water
 
When you put water and oil in a beaker together, the water will float to the top, while the oil will sink to the bottom. This is because oil has a greater density than water.

dreamerofeternity 05-05-2006 04:00 PM

Quote:

Originally Posted by satfire311
When you put water and oil in a beaker together, the water will float to the top, while the oil will sink to the bottom. This is because oil has a greater density than water.

Actually, this has always been a misinterpretation. Water is DENSER than oil. Oil floats ON water. (Water is one of the most dense liquids.)

satfire311 05-06-2006 08:11 AM

Strange
 
I think you may be mistaken, because after I posted this, I tried the expiriment myself and the water floated on the oil. This proves that oil is denser. But who knows?

proud-2-be-brain-dead 09-30-2006 09:54 AM

i gots the answers!!!
 
wow, i am so smart, and i didn't copy from otherz cuz i'm not that stupid. ok, the answers are:

1.)up
2.)core
3.)duh!!
4.)oxygen
5.)no, derrr!!:P
6.)when the species or animals or watever die and never reutrn cuz they're completely gone.

i am so happy with myself *wipes tear from eye* this is my first qwuiz to which i answered the questions to, and i ain't even in elementary school either!! ha ha ha!!! lol


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