answersLogoWhite

0

🧪

Science Experiments

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

11,111 Questions

How have roses adapted?

1. Has thorns to ward off predators which may help extend their life.

2. Has red color so they can't be recognized from a long distance, to attract bees too


What does vinegar to egg shell?

Well when I did my science project on this when i first I had 3/4 up of vinegar in a plastic cup put the egg into the vinegar you could see the acids from the vinegar and egg building up. On the second day, there was a lot of bubblie white stuff in the top of the plasic cup i had.

What is a good substitute for glue?

You should mix some flour and water together it should make a thick paste then ad a bit of milk that should work!!!

What are some characteristics of elastic energy?

Ability to deform itself by compressing, elongate, or any other ways it can deform by itself or another form, but also it's ability to reform, or reshape itself back to it's original position.

May lose it's elasticity over time though.

Can convert into other types of energies. Such as Gravitational Energy and Kinetic Energy. Can be converted from Gravitational Energy and Kinetic Energy.

Who discovered the watch?

It's hard to pinpoint exactly when watches were invented, because they sort of gradually evolved from the clock, but the invention that made the watch possible was the invention of the mainspring in the 15th century. Clocks had traditionally been powered by hanging weights which made it necessary for them to hang on a wall or in an otherwise stationary position. The mainspring, a spiral shaped spring which could be wound up made it so clocks could be moved around and continue to operate. As clocks became smaller and smaller, watches, or small clocks people carried around gradually evolved.

What is an example of a misnomer?

A misnomer is a wrong or inaccurate name or designation; "king crab" is a misnomer-these creatures are not crustaceans at all.

Does the rebound height has a constant relationship with the original height of a tennis ball when released from rest and bounces on a bench?

As long as the tennis ball is not thrust downward, yes, the tennis ball will bounce back to the same proportion of its original height, no matter how far it's dropped, as long as the height is small enough that air resistance can be ignored. The ball will eventually come to rest due to this air resistance.

What would happen if the Earth stoped moving and there were still satellites in orbit around it?

We'd have a serious problem with the moon. If it was on the "going" side of the earth, that is, if the moon was in orbit in the direction the earth was moving, it would keep going. There would be a serious pull from the earth, and there would be a curve in the path of the moon as it left the vicinity of the earth, but it would be headed out into space. If the moon was on the other side, it would plow into us. Game over. If the moon was on either "side" of its orbit, it would still escape earth. It's too massive not to, and it has too much kinetic energy to stay here if the earth stopped cold. Orbiting satellites would take the same kind of hit. They're a lot less massive than the moon, but they're a heck of a lot less closer. Satellites would leave orbit and move off into space, change orbital height according to how much mass they have and exactly where they were in their orbits, or would return to earth and burn up or crash. There is a good sized set of variables there. Individual calculations would have to be made for each satellite. It's mass and in particular its location in its orbit are critical. Remember some satellites are in polar orbit. We'd lose some of them, and other would crash into the planet. There are many satellites up there, and a every orbit you can imagine probably has a bird or three in it. Make some simple drawings and think it through. You'll get a handle on it in short order.

What are opaque object?

There are 3 types of objects:

1.TRANSPARENT OBJECTS:(have no shadow)

it is the object that you can see clearly through .

EX: water , gas

2.SEMI-TRANSPARENT OBJECTS:

can be seen through but not clear enough.

3.OPAQUE OBJECTS:(have a shadow as light cannot pass through it but reflects)

can't be seen through at all.

Which chocolate melts the fastest?

These are the averages from my science experiment that I had to conduct.

Milk chocolate melts at approximately 3 min 36 sec at boiling point.

White chocolate melts at approximately 4 min at boiling point.

Dark chocolate melts at approximately 4 min 08 sec at boiling point.
High-fat chocolates (milk, semi-sweet, white, ect.) will melt the fastest because their melting points are just below that of human body temperature. Most rooms are kept at a stable temperature for people, so melting that type of chocolate does not require too much extra heat. Also, this is why those chocolates have the tendency to "melt in your mouth", or melt in your hand as heat is radiated and trasnfered from the skin to the chocolate.

How do lakes become eutrophic?

Eutrophication

Eutrophication is usually the result of fertilisers being washed into a body of water e.g. lake or river.

1) farmers add fertilisers (containing nitrates and Phosphates) to their crops to help them grow.

2)Heavy rain washes the fertilisers off and the nitrates and phosphates dissolve.

3) The nitrates and phosphates that aren't taken up by plants are washed into a stream or river.

4)The high concentrations of phosphates and nitrates encourage rapid plant and algae growth.

5) surface plants (in the body of water) block sunlight. so plants in the water can't photosynthesize and die (so no more oxygen is being made through photosynthesis.)

6) the decomposing bacteria that break down the dead plants thrive (because of all the dead plants) and use up more oxygen.

7) oxygen concentrations in the water decreases and animals (e.g. fish) die due to lack of oxygen.

What will happen if you hook a up battery to jumping cables?

nothing will happen it will just send a charge of electric current to the end that isn't connected to the battery.

hope i helped you

sincerely, Blake

What objects are of neutral bouyancy?

The question makes no sense. Objects are buoyant in a surrounding fluid; change the fluid, change their buoyancy.

Which element is gaseous at room temperature?

There are several elements that are gaseous at room temperature. They are hydrogen, nitrogen, oxygen, fluorine, chlorine, helium, neon, argon, krypton, xenon, radon and ununoctium.

How a cylinder is used in science?

Well, that depends on what cylinder you are using. For example, a graduated cylinder is used to measure the volume of a liquid, the measure of a solid by displacement, or for measuring quantities of volumes to be added into a mixture or chemical reaction.

Why does a frozen banana catch fire in the microwave?

First of all not quite sure why you would have a frozen banana, but regardless. The fire is most likely due to the fact that the microwave excites the water molecules, ie. ice, and may cause the potassium to burn with enough friction.

What is the difference between a cubic decimeter and a liter?

Nothing. (That was the quick answer.)

A cubic decimeter means 1dm *1dm *1dm = 1dm3

Since a decimeter is 10cm (one tenth of a meter),

a cubic decimeter = 10cm*10cm*10cm = 1000cm3

1000cm3 = 1 Litre by definition.

(Litre is named for a person, therefore it is capitalized)

Some people think of these units as 3-D cubes, but you can also think of them as about three cans of pop, or a particular size of a milk jug. (About one quart if you're American.) (Imagine a Litre in any shape you want.)

How is heat related to expansion and contraction?

All energy is transferable. When a body contracts, gravitational potential energy is converted into both kinetic energy and thermal energy. Heat is released by contraction. Conversely, heat is used for expansion.