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Science Experiments

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

11,111 Questions

In 5th grade science what is a dependent variable?

The dependent variable is what changes. For example, if you are growing a plant, the growth of the plant depends on the amount of light it is given. The growth of the plant is the dependent variable.

How do you answer hookes law experiment?

Hooke's law of elasticity is an approximation that states that the extension of a spring is in direct proportion with the load applied to it.

How much force is needed to accelerate a 3kg skateboard at 5 m s2?

The force needed in this situation is 15 newtons. The formula appears below.

Force = (mass) times (acceleration)

F = 3 x 5 = 15 newtons

What is the BEST procedure for focusing a compound light microscope?

Begin by using the lowest power objective lens and then switching to the next highest power lens.

What container is safe to put dry ice in For example should i put dry ice in a metal bowl glass bowl or does it not matter?

Any container - metal, glass, plastic - will do. Bear in mind that a metal container will cool down; for this reason, glass and plastic are better.

What is an inert medium?

A inert medium Contains no nutes so you have to add the nutes to your plant

What is the question in experiment of pavlov's?

Pavlov's experiment was about classical conditioning.

Can you train a dog to react to a stimulus such as a bell... even on a fundamental level, such as evoking salivation and the expectation of food even without the presence of food.

B.F. Skinner took the experiments in classical conditioning further.

What is a closed experiment?

when energy cannot move through the object(s)

How are pumice rocks mined?

Pumice is an extrusive igneous rock (meaning that it is formed when lava breaks through the earth's crust and hardens on contact with the air). This also means that deposits are found very close to the Earth's surface, and is mined using the drift mine method, in which an open pit is dug. Pumice is removed from the pit as ore, which is a large piece of rock containing the mineral, and is tehn sifted and separated.

What is sublimation in thermodynamics?

Sublimation is the process in which a substance transitions directly from a solid to a gas phase without passing through the liquid phase. This occurs when the vapor pressure of the solid exceeds the atmospheric pressure. Sublimation is an endothermic process, requiring energy input to break the intermolecular forces holding the solid together.

What happens when light enters a glass block?

If the Glass Block acts as a Prism, then when you shine white light on a it, the White Light refracts into all Primary Colors. When the Light exits the Prism you can see all the rainbow colors.

What does variable mean in a science fair project?

the variable, is what varies(the thing your testing against the other thing) or what is always changing hope that helps

signed

amna osman

Is Na2C2O4 a base or acid?

Well technically it's a salt but it is created from components of a strong base (Na2) and a weak acid (C204) which allows us to predict that the pH will be Basic.

If you do the calculations to determine the pH, you will find that it is around 11.3 which makes it basic.

What does a 8 grade science fair project outline look like?

Introduction, Background, Info, Experiment Design, Data

Why are you researching, Hypothesis, and importance of project

How does the stuff get in the blotter paper?

Blotter paper is soaked in a liquid solution of a compound, then allowed to dry out.