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Science Experiments

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

11,111 Questions

How many wind turbines does a village need?

The number of wind turbines needed for a village depends on its energy consumption and the capacity of each turbine. A typical village may require several wind turbines to meet its energy needs sustainably. Factors like local wind conditions and available space also play a role in determining the number of turbines needed.

What does it mean for a chemical to be toxic?

To be toxic means you are not good for someone like if I am a killer and you are one of my friends that would make you toxic to the police you would be seen as me. For a chemical to be toxic is that you probably should not touch and/or drink the chemical for it will damage you.

What particles form a cloud around the nucleus an atom?

Electrons form a cloud around the nucleus of an atom. They have a negative charge and move rapidly in a probability distribution around the nucleus, representing the electron cloud or electron cloud model of an atom.

Does the type of liquid affect the time it take to freeze?

Yes, the type of liquid does affect the time it takes to freeze. Liquids with higher freezing points, such as those with salt or sugar dissolved in them, will take longer to freeze than pure water. Additionally, the presence of impurities in the liquid can also affect the freezing point and therefore the time it takes to freeze.

Does a 60-watt electric light bulb create heat energy?

Yes. Part of the energy is converted to light, part to heat. The percentage depends on the type of light bulb. Fluorescent and LED light bulbs are more efficient than incandescent light bulbs.

A 60-watt incandescent bulb will be uncomfortable to remove from the socket with your bare hands after turning it off. However, a 100-watt bulb will burn you if you remove it with your bare hands after turning it off.

Is neon found in nature or is it man made?

Neon is found in trace amounts in the Earth's atmosphere, but it is not typically found in its pure form in nature. Most of the neon used commercially is produced through a process called fractional distillation of liquid air.

How long does it take for marigold seeds to germinate?

Marigold seeds typically germinate within 4-14 days when planted in well-draining soil and kept consistently moist at temperatures between 70-75°F (21-24°C). Some varieties may take longer to germinate, up to 21 days.

Why do electrician screwdrivers have rubber handle?

This is my opinion.

When using a screwdriver, you would have to twist and turn. This creates friction. by creating friction, the screwdrivers are getting negatively charged.

But, rubbers are insulators(objects that hold elections loosely. Mostly non-metals). this means that rubber can hold electrons tightly; preventing any electrons from flowing. So by using rubber, electricians or one would have protection from electric shock. but if there were no rubber, there would be sparks from negatively charged screwdriver when it is attracted to a positive charged or neutral object.

The rubber hold the electrons which prevent electric shock.

~Anonymous

How does electricity effect seed germination?

Electricity can potentially affect seed germination by stimulating enzymatic activity and metabolic processes within the seed, leading to quicker growth and improved germination rates. However, the impact can vary depending on the type of seed, the intensity and duration of the electric field, and other environmental factors. Further research is needed to fully understand the mechanisms and outcomes of using electricity for seed germination.

How long does it take a tomato seed to germinate?

Tomato seeds typically germinate within 5 to 10 days when planted in optimal conditions, which include warm temperatures, adequate moisture, and good soil quality. However, some varieties may take up to 2 weeks to germinate.

The state of being manipulated means?

Being manipulated means being influenced or controlled by someone in a cunning or deceitful way, often for their own benefit and at the expense of the person being manipulated. It can involve tactics such as lying, guilt-tripping, or emotional manipulation to make someone act in a certain way against their best interests.

Describe an electric field?

An electric field is a region surrounding an electrically charged object where another charged object experiences a force. It is a vector quantity that describes the direction and magnitude of the force that a positive test charge would experience if placed in the field. Electric fields can be created by static charges, moving charges, or changing magnetic fields.

What is the synonyme of nuclear fissure?

The synonym for nuclear fissure is nuclear division or nuclear cleavage.

What does pricipitation mean?

When something that's made from is falling out o the sky

How was polyethylene discovered?

Polyethylene was discovered in 1933 by Reginald Gibson and Eric Fawcett, two researchers working for Imperial Chemical Industries (ICI) in the UK. They accidentally discovered polyethylene while conducting an experiment with ethylene gas at high pressure and temperature. This accidental discovery led to the development of one of the most widely used plastics in the world.

What is the scientific word for obleck?

Trixatropic

Liquids that exhibit decreased viscosity with increaseg agitation.

Models are used to save time money and lives?

Models help to simulate complex systems and scenarios, providing insights that can inform decisions and lead to more efficient resource allocation. By using models, organizations can reduce costs associated with trial and error, optimize processes, and predict potential outcomes, ultimately saving time, money, and even lives by enabling better-informed decision-making.

Who discovered acceleration?

Acceleration as a concept was not discovered by a single individual, but it was first formally described by Sir Isaac Newton in his laws of motion. Newton's second law of motion states that the acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass.

Is hair removal cream an acid or an alkali?

Hair removal cream is typically an alkali (basic) substance containing ingredients like calcium hydroxide or potassium hydroxide. These ingredients work to break down the proteins in hair, allowing it to dissolve and be wiped away.

As long as an object at rest is there a force acting against it?

There can be forces acting on an object while it is at rest, as long as the forces cancel each out. For example: a block laying on a table feels the force of gravity pulling it down, but the table pushes up with the same force. Therefore, the forces cancel and the object remains at rest.

What gas can reignite a blown out match in a test tube?

Oxygen gas can reignite a blown out match in a test tube as it supports combustion by reacting with the match head.

Which is the part of the experiment that is the measurable outcome?

This is the variable which changes as a result of what you change in the experiment. If you change the height from which you drop a ball, you may observe the height to which it bounces. The height of the bounce is the outcome variable.

What will happen if a burning splint is put into the tube of hydrogen collected?

a glowing splint in hydrogen gas will make a popping sound. this is because hydrogen is very reactive and when it comes into contact with the oxygen in the air it reacts with it and that is what you hear in the popping sound.

What is the controlled variable in Spallanzani experiment?

In Spallanzani's experiment, the controlled variable was the type of container used to hold the broth. By using different containers with varying levels of accessibility to air, Spallanzani was able to determine the role of air in the generation of life.