Science Experiments

Archive for June, 2007

Question: Is there a problem with letting your kid eat 100 marshmallow peeps for a science experiment?

Also, do you think it’s possible to eat 100 marshmallow peeps? And if you think there is a problem with it, what do you have against it?

Answer: Not all at once, he’ll puke at around 50… maybe over a few days

Ocean in a Bottle Science Experiment For Kids : Filling the Bottle in Ocean in a Bottle Experiment

Question: please help me, im desperate?

in my science class we r workin on variables, controlled, responding, manipulated, and expiermental.

im not understanding EV or CV or RV or even MV for that matter.
here is my question for you though for homework though.

gloria wanted to find out if the color of food would affect whether kindergarten children would select it for lunch. she put food coloring into 4 identical bowls of mashed potatoes. the colors were red, green, yellow, and blue. each child chose a scoop of potatoes of the color of their choice. gloria did this experiment using 100 students. she recorded the number of students that chose each color.

i know the MV is colors of potatoes and RV is what color was more popular.

but what would the CV (there are 2 of them) and EV be?

and can someone please explain EV better to me? i dont really understand it much.

Answer: CV would be the type of food used and the bowls which are identical (so as not to influence the children’s choice).

An experimental variable is the thing being tested. Everything else in the experiment or all other variables must be the same. These variables are also called the controlled variables. Keeping these variables the same allows the experimenter to show that it was the experimental variable that caused the results.

Grant’s kindergarten science project

This section of Science Experiments web site with egg Science Experiments for middle schoolers is about egg drop experiment or egg in a bottle experiment. The egg drop experiment is among the most popular egg experiments in Science Experiments classes.

Egg experiments are easy to do and you can do it at home. The following section describes what you need to do to perform an egg drop experiment.

Equipment needed in Egg Drop Experiment

• A cooked egg without the shell
• a bottle with a neck slightly smaller than the egg
• a piece of paper
• a match or candle

Method for the egg in bottle experiment

1. Check that the egg will just fit into the neck of the bottle but will not tall through. The wide necked bottles that are used to serve wine are about right.
2. Screw up the piece of paper and put it into the bottle.
3. Light the paper by using a long candle or dripping a burning match into the bottle.
4. Quickly fit the egg in to the neck of the bottle. Amazingly, the egg will be sucked in to the bottle with a gurgle and a pop.

Warning: ask an adult to help you with the candle or match.

Egg Drop Experiment Result

As the paper burns, it uses up the oxygen in the air. The egg seals the neck of the bottle so that no more air can get in to replace the oxygen. This reduces the air Pressure inside the jar and the egg is sucked in. Hence the name egg drop experiment or egg in a bottle experiment.

Egg Drop href=”http://www.science-experiments.info/Egg_Drop_Experiment.html#”Experiment