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Science

The observation, identification, description, experimental investigation, and theoretical explanation of phenomena is all part of science. Nothing is immune to the scientific process: from charm quarks that haven't existed naturally since the beginning of time to Pluto, recently demoted from planet to dwarf planet. Questions on knowledge about the material and physical aspects of our world are asked and answered here.

686,985 Questions

Where is a molecule split during replication?

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Asked by Wiki User

At a specific location known as the "replication fork," DNA splits or "unzips" during replication. The split of the double-stranded DNA molecule into two single strands occurs at the replication fork. Due to this division, the replication apparatus may access and duplicate each of the single DNA strands, resulting in the creation of two identical DNA molecules that each include one original and one freshly manufactured strand. DNA replication is necessary for cell division and the genetic information transfer to daughter cells.

What causes the most erosion on earth?

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Asked by Wiki User

The main cause of the majority of erosion on Earth is water. Erosion is caused by a number of water-related processes, including:

River Erosion: Rivers that run over the surface of the Earth have the ability to erode and transport a sizable amount of soil and silt. They can sculpt valleys and canyons over time.

Rainfall Erosion: When raindrops hit the ground, they knock soil particles loose and move them away, causing erosion.

Erosion along the Coast: Ocean waves, tides, and currents cause erosion along the coast. Loss of land and modifications to coastlines may occur from this.

Massive ice formations known as glaciers have the power to destroy the terrain by dragging rocks and sediments behind them as they advance.

Erosion due to wind: In arid areas, wind can pick up and move loose soil and sand particles, leading to erosion.

Although water erosion is the most significant, the Earth's surface is also shaped over geological time scales by other forces such as wind, ice, and gravity. Deforestation and construction are two examples of human activities that can hasten erosion processes, increase soil loss, and harm the environment.

Is dextrose mixture or pure substance?

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Asked by Wiki User

Dextrose:

  • Pure dextrose is a simple sugar made of only glucose molecules.

  • Dextrose solution is a mixture of dextrose and water.

  • Pure dextrose is a pure substance, while dextrose solution is a mixture.

  • Pure dextrose is a white, crystalline powder, while dextrose solution is a liquid.

TL;DR: Dextrose can be either a pure substance or a mixture, depending on how it is prepared.

What does diffusion get its energy from?

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Asked by Wiki User

Diffusion is a passive process, meaning it does not require external energy input. Instead, diffusion relies on the inherent kinetic energy of particles. The energy for diffusion comes from the random thermal motion of molecules and atoms. In other words, as particles move due to their thermal energy, they tend to spread out from areas of higher concentration to areas of lower concentration.

This movement is a result of the constant random motion of particles, and over time, it leads to a more uniform distribution of particles in a given space. Diffusion occurs in gases, liquids, and solids, although it is generally faster in gases and liquids due to the greater freedom of movement of particles in these states of matter.

Can a producer make its own food?

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Asked by Wiki User

Yes, however they may require a fuel not created by themselves.

How does the energy of core electrons compare with that of valence electrons?

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Asked by Wiki User

The energy of the valence electrons is greater then the energy of the core electrons.APEX

Why are solids better heat conductors than liquids?

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Asked by Wiki User

Solids are better heat conductors than liquids because their particles are closely packed and connected. In solids, heat energy moves easily through vibrations and strong bonds between particles. Liquids, on the other hand, have looser arrangements and weaker connections between particles, making it harder for heat to travel through them.

What is potential international player?

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Asked by Wiki User

I am level 28 in adventure quest worlds, my user is deedy3 and pass is deedy2

What are 25 reasons for taking part in sport?

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Asked by HeyheyJJ

bored

hungry

tired

sick

lazy

First of who ever put the last answer is totally wrong because if you are........

bored

hungry

tired

sick

lazy

Then well you cant play sports

people play sports because that is what they want to do

i play fast pitch and i put my heart and soul into it and if you are on a sports team and you arent doing the same then quit!!!!

What keeps things colder-plastic wrap or aluminum foil for a science project?

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Asked by Wiki User

A wet towel will keep drinks cooler. This happens because the sun or whatever heat source will try to dry the water from the towel. This requires heat energy, and is drawn from the towel resulting in a colder temperature in the towel itself.

How much does a barracuda weigh?

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Asked by Wiki User

A barracuda wheighs about 180 pounds and the maximum weight it could be 250 pounds

What kind kind of sizes are there for a basketball?

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Asked by Wiki User

There are two different basketball sizes, a guys ball and a girls ball, girls will have the inscription 28.5 on it and are a smaller standard size then a mens ball. those are the two different sizes

Why do the penguins have a triangle logo on jersey?

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Asked by Wiki User

because of the the rivers come in a triangle in Pittsburgh so they put that in there jersey

Which would fall first if you dropped a bowling ball and a golf ball from the Empire State Building at the same time?

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Asked by Wiki User

They will fall at the same time, and also hit the ground at approximately the same time (given errors for air resistance).

How does the circulatory system help you ride a bike?

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Asked by Wiki User

the respiratory system increases its intake depending on how much activity is being done having said that the more activity the more oxygen your cells need to maintain movement so that is the help you get from the respiratory system

What is a sport rehabilitator?

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Asked by Wiki User

Sports rehabilitation occurs when a player becomes addicted to sports. They then check into sports rehab center to eliminate their addiction.

What happens to the skin when you're submerged in fresh water for an extended time?

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Asked by Wiki User

As the dead cell layer of the skin (filled with keratin) expands with water, it begins to take up more surface area, but it's still connected to the living cells beneath and doesn't have anywhere to go. As a result, the stratum corneum wrinkles.

What are some ways to crack my back?

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Asked by Wiki User

When i crack my back i sit on the ground or a chair or something and just twist to the left and right, it cracks. You could also get someone to crack your back by them walking and pushing on your back.

Do divers hear better underwater?

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Asked by Wiki User

They can hear more, but not better.

Because of the density of water, vibrations are changed in pitch, and may be muffled and garbled. Since clarity is the most important factor in hearing, underwater communication is mostly done by hand signals instead.

On the other hand, sound moves more quickly underwater, and as a result you can hear from a greater distance. Things can be heard from a lot further away and/or are louder than in air. Unfortunately, because of the higher speed, and reflections from the bottom, sound direction is almost impossible to determine by ear.

When you row a boat on the pond why does the boat go forward when you are pulling the oars back toward you?

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Asked by Wiki User

For every action there is an equal and opposite reaction. Newton's laws are essential to understand. When you apply force through your ores you are getting an equal response. Therefore it's like you using the water to throw your weight in the direction of need being.

Another example would be if you're in space. There is nothing to grasp to apply force, therefore the force is not created. Waving your arms in space isn't going to allow you to move unless you have something to throw. If you throw the object in the opposite direction of where you want to go.. the force will be applied equally back therefor causing you to move.

Can you put Lacrosse Head in hot water to soften?

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Asked by Wiki User

Yes, a lacrosse head can be put into hot water to soften the netting. Just be sure that the water is not boiling as it could either melt or weaken the plastic structure of the head. However, the best way to loosen the netting on a lacrosse head is to break it in by using it.

What leads to running cramps?

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Asked by Wiki User

food

Eating 90 minutes before running can lead to possible cramps, but more often will cause the runner to vomit the food up, depending on the runners fitness level and the length & effort of the run.

Side 'stitches' are caused by lack of oxygen and a build up of lactic acid in the muscles. This is the primary cause of most muscle cramps after exertion. The over-use of un-'trained' muscles - trying to do something one rarely does, and then 'pushing'(or trying to do something past your ability) will almost always result in muscle cramps.

Stretching before and after any exertion will reduce the chances and effect of muscle cramps, as well as giving yourself time to 'cool-down' or slowly reduce the level of your exertion before quitting.