Science Experiments

Yes. An Iron core electromagnet has a stronger magnetic field then a coil. The magnetic flux is condensed and travels through the iron core with little resistance, while air provides much greater resistance.

Matter changes is to make a matter for example water to change form, and when it becomes steam it means you achieved a matter change.Everything has molecules that move so to change the matter you must make the molecules start moving in a different way. You achieved that with heat as you know heat has this property.

Chemical change is to mix two chemicals that will form a new product with equal mass, and that's the chemical change ;o)

A clamp or clamp holder is used to secure a beaker or flask to a ring stand. The clamp is adjustable to accommodate different sizes of glassware and can be tightened to hold the beaker or flask securely in place during experiments.

A fair experiment is fair wheras an accurate experiment is more accurate.

LOL Joke. The latter simply means the results are to a higher degree of.... accuracy e.g instead of to 5, the result could be 5.1235

However a fair experiment is a test carried out under fair conditions.

If testing more than once during the experiment you have to be sure that things remain at the same level i.e.

Temperatures

Amounts of reactants

Time must remain the same..

No, two electric field lines cannot originate from the same point because the electric field direction at that point would be ambiguous. Electric field lines always point in the direction of the electric field at a given point and represent the direction a positive test charge would move in that field.

Displaced liquid refers to the volume of liquid that is pushed aside or moved when an object is submerged or immersed in the liquid. This concept is related to Archimedes' principle, which states that the buoyant force acting on an object is equal to the weight of the displaced liquid.

-- inflating tires

-- playing musical "wind" instruments

-- drinking through straws

-- flushing toilets

-- watering lawns with hose or sprinkler

-- drawing water from wells

-- blowing up balloons

-- operating barometers

-- maintaining body shape, especially around the abdomen

-- breathing

--cleaning vacuum

--foot pump

The only way to increase water pressure is with a booster pump. I would recommend talking to a plumber, he can give you an estimate and possibly some pointers. Also, home improvement shops tend to have poor pump selection so be sure to shop around from catalogs and the internet before buying anything.

A group of experimental subjects that is not exposed to a chemical or treatment being investigated so that it can be compared with experimental groups that are exposed to the chemical or treatment.

cw: An experimental control may be the control group. In general, the experimental control is something that allows you to say that the treatment effects on the experimental group are due to the treatments, rather than anything else.

A solution is a homogeneous mixture where the components are uniformly distributed at a molecular level. A mixture is a combination of two or more substances that are physically combined and can be separated through physical means.

medicine droppers are used for giving medicine to infants. medicine droppers are used for giving medicine to infants. or any paerson that can't drink medicine from a spoon. or any paerson that can't drink medicine from a spoon.

You can separate sand from water using the process of sedimentation and decantation. Allow the mixture to stand so that the sand settles to the bottom of the container. Carefully pour off or decant the water, leaving the sand behind.

Light travels as an electromagnetic wave radiation, along with other radiation like radio and TV waves, microwaves, UV, and so on. All these are basically the same but have different frequencies. Air does not absorb light much, it is almost transparent to light unless it contains dust etc, so there is no reason why it should not travel through air. But don't confuse it with sound, sound is a compression wave in the air and is quite different to light in the way it travels.

A physical change is when an element undergoes a change while not becoming a whole new element. An example is when metal is flattened therefore changing its physical shape or when water evaporates changing its physical state of matter. A chemical change is when an element becomes a new substance through a chemical reaction. An example would be burning wood or mixing a base and an acid to make water and salt. You can tell when a chemical change has occurred because most commonly the color changes, heat is released, or bubbles come up.

Quicksand is a bed of loose sand mixed with water forming a soft shifting mass that yeilds to pressure and tends to engulf any object resting on its surface. It is similar to cornstarch and water because you can sink in it but it is thick and it is a solid.

In the simplist terms, acceleration is a function of velocity. Velocity is a vector quantity, meaning it has both magnitude and direction. The magnitude of veloicty we call speed. But if either the magnitude (speed) or the direction of the velocity changes with time then the object undergoes an acceleration.

So you baseball player runs around the base, he may not change speed but he is certainly chaning directions and therefore is accelerating.

Yes, and No.

You will get an inaccurate number since of air temperature and a few variables, but it will be relatively close.

I do not recommend this, because a few things may happen, and even some I do not even know of. The thermometer will get hot and melt. Or explode. And many other things can happen.

The chemical name of Plaster of Paris is calcium sulfate hemihydrate. It is produced by heating gypsum, which is calcium sulfate dihydrate, to a high temperature to remove water molecules and create a powdery substance that can be mixed with water to form a moldable paste.

A ramp makes work easier by reducing the amount of force needed to move an object between different heights. Instead of lifting the object straight up, you can push or pull it along the inclined surface of the ramp, which requires less force. This helps to minimize the work done against gravity and makes it easier to transport heavy loads.

When a leaf is placed in saltwater, the excess salt can disrupt its ability to absorb water through osmosis. This disruption in water balance can cause the leaf to wilt and eventually die due to dehydration. Additionally, high salt concentrations can also damage the cells and tissues of the leaf.

The properties that glass and plastic share include being impermeable to water. Glass and plastic also share a high melting point.

An independant variable is the variable in science that you'll be changing throughout the experiment. Like if you were experimenting on plants, the independant variable is how many plants you'll be taking out and putting back in. For example, you take out one of the bad plants and include three more.