Science Experiments

Because when they are in the water, part of their head floats atop so their predators don't see them. It makes it perfect for the sense organs to be on the top part of the head so it can see, hear, and eat its prey, or watch for its predators without being seen.

To Observe

Is an article/resarech etc.

* at micro or macro level * normative or positive * dealing with forprofit or nonprofit sector

Any body of water ! Like ocean,streams,lakes. That's easy when u study! Lol

Absolutely. Water must achieve a temperature below 32°F before it can freeze. The closer the water is to room temperature, the quicker it will freeze.

There is a phenomenon in which warm water freezes and cold water not:

In some regions(e.g. Siberia) it is possoble to pour boiling hot water to the ground and it will freeze even before it hits the bottom. This is possible as hot water's molecules are moving more heavily than those of cold water. Therefore the surface of the water is bigger and warmth can leave the molecules faster.

I remember a report of a experiment at one of the university's found hot water froze faster by a inute.

Yes, many times in order to discover the effect LSD had over the humans.

yes.The chemical structure of salt(NaCl) is simpler than that of the sugar (C6H12O6)

simple - it because water will not remove the stickiness, it simply makes it harder to get off, because then you have a wet and still sticky label.

From,

Sophie

snails are detrimental to plants. aim your experiment at exterminating them. they like beer and will gather at a shallow dish of beer set out in the garden. you can collect them there. or you can make a bait ; one can of stale beer, one pound of brown sugar, and one teaspoon 50% sevin wettable powder. mix until pasty, smear on the underside of a board and elevate just above the soil. this also will take care of slugs. i raise butterflies, so make sure the board is just above the soil.

An easy way to test the general airworthiness of a rocket design is to tie a string around the middle of the rocket so it hangs "balanced". Then swing the rocket around your head in a big circle (kinda like twirling a lasso). If it's aerodynamically stable, the "nose" should always remain pointed "forward" as it goes around in a big circle.

Paracelsus

its when you right lab notes for science!

If you were to decorate your board, here are some suggestions to make your stroop board look nice:

- Make the board colorful

- Put the picture of the stroop test sheet

- Put pictures of your colors

Sorry if i didnt make too many suggestions. I am doing a stroop science project too so this is what I did.

yes

The specific rotation is +123 and -123 degrees for the (+) and (-) enantiomers respectively

7 times

They hear a delayed sound

Egg Vacuum For an experiment I decided to do 'Egg Vacuum'. It is a force of air that pushes the egg inside of the bottle; this is the method we used: # Find a bottle with a long, narrow neck and set it on the table. The opening should be just small enough to keep the egg from falling inside. # Boil and peel and egg. # Drop 3 lit matches into the bottle. # Quickly place the egg over the mouth of the bottle. What happens you may ask? The lit matches heat the air inside the bottle. When air is heated it expands and takes up more room. As the heated air expands, some of it escapes out the bottle. When the matches go out, the air inside the bottle cools and contracts (and takes up less room), thus creating a lower pressure inside the bottle than outside. The greater pressure outside the bottle forces the egg into the bottle. Now I'm going to tell you about Expansion, Expansion is an increase in the size of a body without the addition of material to the body. Most solids and liquids expand when they are heated and contract when they are cooled. Gases also expand when they are heated at a constant pressure. If a gas is heated in a container that prevents expansion, the pressure of the gas increases. If I wanted to get the egg out, I would simply turn the bottle upside down and blow into it. The increased air pressure in the bottle will cause the egg to pop back out. Below are some useful Related Links:

The measurement that is accurate is one that is precise. These are also commonly titled accurate measurements in the books.

velocity is distance divided by time. (miles per hour, feet per sec, etc.)

so the average speed of the ball is 10m/20s or .5 m/s

"No... no it's really not.

Water tight is when water can't get in

Airt tight is when air can't get in

So I guess it's similar. But different." Not an illuminating answer... Given that water molecules might be larger than oxygen molecules, then a watertight vessel may still leak air but an airtight vessel wouldn't leak either.

So would a spaceship immersed in water leak? Maybe the seals are different for a vacuum but you'd think it wouldn't?

There are three main states that a substance can exist as: solid, liquid and gas. The transition between these states occur when a substance is heated or cooled past their freezing/melting or boiling/condensing points.

Solid -> Liquid = Melting

Liquid -> Gas = Boiling

Gas -> Liquid = Condensing

Liquid -> Solid = Freezing