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Science Experiments

Experiments often conducted by students to test different scientific theories and hypotheses

11,111 Questions

How are the elements organised on the periodic table?

The elements proceed in order of increasing atomic number as you read left to right, line by line downwards. The lines (periods) are cut off at the point where a full valence shall is reached; the gaps in the upper/earlier periods is used to match the orbitals being filled in successive periods.

Science experiments with Gatorade?

Gatorade vs Water. Which has more effect on heart rate when exercise? Does Gatorade really give the drinker energy?

How many types of rock can float in water?

There are only one type of rock that can float on water. And that is Pumice stone. According to more than millions of people's answers, that is the one.

If you put an egg into colored vinegar would the egg change color?

Well yeah. It's called dying eggs. :P

that will actually be awsome

Why is the science fair project on storm drain is interesting?

The storm drain is really interesting to much children. It also wins many science fairs.

Suggest suitable Experiments to find spring constant of a helical spring?

Connect a mass to the bottom of the spring. (depending on the spring size, the mass will vary, the larger the spring the greater the mass u can use) Suppose you use a 100 g mass on a spring, measure the amount by which it stretches and record the data. Use hooke law to figure out the constant of the spring. K = m.g/x m = mass, g =gravity, x = stretch

In a experiment what is the independent variable?

The independent variable is the item that varies through out the experiment.

The dependent variable is what changes due, and that is what we get our information from.

For example:

Patrick had a science experiment. He had 2 cups filled with dirt. Cup A had more water than Cup B. Each cup held the same type of seed and were both put in equal sunlight at equal amounts of times. What is the independent variable in this experiment?

Answer: The water.

The dependent variable would be the plant growth.

*An easy tip to remember this is using the scientific title.

"The effect of _______ on _______"

The first blank is always the INDEPENDENT Variable, thus making the second blank a DEPENDENT. So in this experiment it would be "The effect of AMOUNTS OF WATER on PLANT GROWTH."

This shows that the Independent Variable = Water

Dependent = Plant Growth

Where is it possible for a person to walk one kilometer south one kilometer east and one kilometer north and end up in the exact same place?

Either the north or south pole. It would have to be the north pole. You can't walk south from the south pole.

Using cardinal directions as a guide you can walk south from the south pole. Using general directions it could only be the north pole.

If scienists tried to repeat Thomson's experiment and found they could not would Thomson's conclusion still have been valid?

No, for according to the scientific method and the others chapters you may have learned it can only be valid if it can be proven through several experiments and has the same results which will fit with your educated guess.

By: A eighth grader in Frank M. Wright

L.L. =] (L&L)

What are the assumptions used to develop the kinematics model of circular motion?

The main assumptions in developing the kinematics model of circular motion are that the object is moving along a circular path at a constant speed, which implies uniform circular motion. Additionally, it is assumed that there is no tangential acceleration, meaning that the speed of the object remains constant. Finally, the assumption is made that the object's motion can be described using angular quantities such as angular displacement, velocity, and acceleration.

How many variables do you need in a science fair project?

you need a least three and thats not what judges look at they look at neatness, and other stuff you need to work on....

Why do people slow down when they see accidents?

Well that's a random but good question. People sometimes slow down at car accidents because they just kindof realized that they saw death. Their life flashes and they feel for that person that passed. And what their family mst be going through. So instead of yelling they slow down and be nice.

What happens to anything that sits in water long enough?

what happens to things that sit in water for a long time?

Why does CaCo3 otherwise called marble chips react with vinegar?

CaCO3 (calcium carbonate) is a mild base, and as such reacts to neutralise acids.

Vinegar is a dilute solution of acetic acid (AcH).

CaCO3 + 2AcH --> H2O + CO2 + CaAc

What is a good title for a science fair board about teeth?

"How do teeth respond to heavy metal music?" "How do teeth respond to heavy metal metal?" "How do metal respond heavy metal metal metal?" "How Heavy do metal metal metal metal metal?" "Heavy do metal metal heavy metal teeth metal?" "How do teeth respond to acid/alkali?"

How the liquid mosquito vaporizer works?

after being switched on it takes some time for the device to get heated. this vaporises the mosquito repellent fluid . The fluid vapours contain chemicals that make the mosquitos drowsy. After being exposed to the fluid for some time , the mosquitos fall asleep. The colour of the light on the device also attracts the mosquitos to come near the device .

P.S : Close the windows

What are some examples of corrosion?

Iron and steel rusting is an example of corrosion. Copper pitting or the green patina one sees on copper roofs are also examples of corrosion. Stress Cracking is also considered an example of corrosion.