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Science Experiments

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

11,111 Questions

Describe two ways that fossils can form?

By fossilisation and permineralisation.

Fossilisation is caused by layers upon layers of sediment burying the bones. As the layers of sediment above the buried bones increases, so does the pressure on the layers of sediment lower down. The pressure becomes so great that the bones and the sedimentary rock fuse.

Permineralisation occurs when mineral rich water trickles in through the sedimentary rock reaching the dinosaur bones. The minerals fill in the cracks and spaces within the bone. Sometimes the calcium in the bones may be replaced with these minerals. The new minerals in the bone make them even harder and more likely to be preserved.

Explain why Jupiter radiates more energy into space than it receives from the sun?

None of the scientist think that cold fusion can occure in any form of hydrogen. Fusion depends on density and temperature. So, hydrogen compounds and metalic hydrogen have hydrogen atoms much more closer than gas form of hydrogen.

On Earth, the cold fusion rate about 1 megawatt and my rough calculations for jupiter 3.000.000.000.000.000 watts.

How many people have solar panels?

Well, That Depends Alot Of People Have Solar panels.

Even People In Africa, Peru, And Chile, even schools... it always depends on where your looking.

Can water dissolve crushed garlic?

Yes, water can dissolve crushed garlic. When garlic is crushed, it releases its soluble compounds into the water, allowing them to dissolve. This is why garlic-infused water is used in cooking to extract its flavor.

What are the volcano which is classified in shield volcanoes?

A shield volcano is a type of volcano usually built almost entirely of fluid lava flows. They are named for their large size and low profile, resembling a warrior's shield. This is caused by the highly fluid lava they erupt, which travels farther than lava erupted from more explosive volcanoes. This results in the steady accumulation of broad sheets of lava, building up the shield volcano's distinctive form. Shield volcanoes contain low viscosity magma giving it flowing mafic lava.

Which property of light ray does not change in refraction?

The frequency of a light ray does not change when it undergoes refraction. The wavelength and speed of light can change, but the frequency remains constant. This is because frequency is a characteristic of the light source, not of the medium through which light is traveling.

Is it bad to plow a field with snow?

Yes, plowing a field with snow can damage the soil structure and lead to soil compaction. It can also hinder future plant growth by disrupting the natural ecosystem and potentially causing erosion. It is better to allow the snow to melt and naturally nourish the soil.

What is the first step when designing an experiment?

The first step when designing an experiment is to clearly define the research question or objective that the experiment aims to address. This will help provide focus and direction for the experiment and guide the selection of variables, methods, and analysis techniques.

What part of the cell structure controls replication of chromosomes prior to cell division?

The nucleus of the cell contains the genetic material, including chromosomes, and it plays a critical role in controlling replication prior to cell division. Within the nucleus, specialized structures such as the nucleolus and proteins involved in DNA replication help regulate the process of chromosome duplication.

Does alanine become a zwitter ion at pH 7.3?

No, alanine is neutral (zwittering, +H3NCHCH3COO- ) at pH 6.1. Actually I couldn't find any amino acid being neutral at pH 7.3

Alanine is anionic at pH 7.3 (H2NCHCH3COO-) , because it is above 6.1.

What instruments are used to determine the altitude of the north star?

Instruments such as a sextant or a quadrant can be used to determine the altitude of the North Star. By measuring the angle between the North Star and the horizon, navigators can determine their latitude.

What gives the sun its color?

The sun appears yellow because of the Earth's atmosphere scattering sunlight, which makes it appear reddish-yellow. In reality, the sun emits light across the entire visible spectrum, but shorter wavelengths (blue and violet) are scattered more by the atmosphere, leaving yellow and red light to reach our eyes.

What on earth is a Scleroscope?

A Scleroscope is a device used to measure the hardness of a material, typically metals. It works by dropping a hardened steel ball onto the material's surface and measuring the rebound height to determine the hardness value. This test method is useful for quality control and assessing the mechanical properties of materials.

Name any 5 scientists?

William Herschel

Albert A. Michelson

Albert Einstein

Isidor Isaac Rabi

Lev Davidovich Landau

Murray Gell-Mann

Leon Lederman

Saul Perlmutter

===============

Everett Mark Hafner

Adrianos Melissinos

Eratosthenes

Why do students at school have to study Science if we don't want to become a scientist?

Studying science helps develop critical thinking skills, problem-solving abilities, and a better understanding of the world around us. It also provides a foundation for a wide range of careers beyond just becoming a scientist.

What makes different colours in a firework?

We did this experiment in chemistry (well something like it). There's different chemicals that is out into the powder. The chemicals react differently when exposed to heat therefore when exposed to the extreme heat of the small explosion, the chemicals give off a certain color. The color depends on the chemical.

What did Boyle observe in his experiment with gas trapped in a J-tube?

Boyle's experiment with gas trapped in a J-tube showed that when the volume of a gas is decreased, the pressure increases proportionally. This allowed Boyle to establish Boyle's Law, which states that the pressure of a gas is inversely proportional to its volume at a constant temperature.

Why do you fill volcano with cement?

Volcanoes are filled with cement as a way to stop or redirect lava flows in the event of an eruption. The cement reduces the risk of damage to surrounding areas by containing the lava flow within the volcano. It is a measure taken to protect lives and property in volcanic zones.

Why does the position of Saturn in the night changes throughout the year?

The position of Saturn in the night sky changes throughout the year due to the Earth's orbit around the Sun. As Earth moves in its orbit, the position of Saturn relative to background stars appears to shift. This effect is known as celestial motion and causes Saturn to rise and set at different times in different seasons.

What time is dawn?

Dawn is the time that marks the beginning of the twilight before sunrise. It is recognized by the presence of weak sunlight, while the sun itself is still below the horizon. Dawn should not be confused with sunrise, which is the moment when the leading edge of the sun itself appears above the horizon

Can tap or spring water be supercooled?

In order for water to be supercooled, there must not be impurities that can act as nucleation sites within the water. Spring water should work, though tap water would more than likely need to be purified before it would be supercooled, as by reverse osmosis.

Why is there a red sunset?

A red sunset occurs when sunlight passes through a thicker layer of the Earth's atmosphere, scattering the shorter blue and green wavelengths. This leaves behind the longer red and orange wavelengths, creating the red hue we see in the sky.

What is vivisection?

Vivisection is defined as the dissection of living animals for experimental purposes. That definition has recently been broadened to include any experimentation on a living animal. The word comes from the Latin words vivus, which means "living", and sectio, "a cutting".

Vivisection has an ancient history dating back to around 500 BC. Akmaeon of Croton was one of the earliest actual vivisectionists, discovering the importance of the optic nerve to sight after he severed it in living animals. In the early 17th century, English physician William Harvey used vivisection to discover concepts such as the circulation of the blood.