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Science Experiments

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

11,111 Questions

What factors contributed to the Great war?

The main factors that contributed to the outbreak of the Great War (World War I) were militarism, imperialism, nationalism, and alliances. The assassination of Archduke Franz Ferdinand of Austria in 1914 served as the spark that ignited the conflict among the major European powers.

What is a hardened layer of magma called?

A hardened layer of magma is called a lava flow or volcanic rock.

Which layer of earth is like the shell of an egg?

The "Crust" is one of the Earth's layer.It can be compared to an eggshell

What the materials you need for the question does color affect the rate in which ice cubes melt?

For the question "Does color affect the rate at which ice cubes melt?", the materials you would need include several ice cubes of different colors, a timer, a tray to hold the ice cubes, and a controlled environment with constant temperature. By observing and timing the melting of ice cubes of different colors placed in the same conditions, you can compare the rates at which they melt to determine if color affects the melting rate.

Where could the organisms have come from in the 1768 broth experiment described?

the organisms could come from the heat in the broth if you boil it,cause if you boil it,it creates organisms. It will only work if you put a cap on top of the bottle you are boiling. the one with the cap on is not cantaminated. The one without the cap is cantaminated and already has organisms in it.so the organisms come from the oxygen in the one where it does not have the cap on

List two Geothermal energy uses from a volcano?

  1. Geothermal power generation: The heat from a volcano can be harnessed to generate electricity through geothermal power plants, which convert the natural steam and hot water from the underground reservoirs into usable energy.
  2. Geothermal heating: Heat from a volcano can be utilized for direct heating applications, such as heating buildings, greenhouses, spas, and swimming pools through geothermal heat pumps or district heating systems.

What is the chemistry related careers involved in developing a better breed of paddy?

Careers in developing a better breed of paddy may include agricultural chemists who study the chemical composition of soil and water, plant biochemists who investigate the metabolic pathways in plants, and biotechnologists who genetically modify crops for desired traits. These professionals work together to improve the nutritional content, disease resistance, and overall yield of paddy crops through chemical research and innovation.

Does antifreeze affect plant growth?

Yes, antifreeze contains ethylene glycol which is toxic to plants. Exposure to antifreeze can damage plant cells, disrupt water balance, and lead to wilting and stunted growth. It is important to keep antifreeze away from plants to prevent harm.

What do the crust and upper layer of the mantle make up?

The crust and the hard uppermost mantle make up the lithosphere, which is the solid, rocky layer covering the entire surface of the planet and reacts to stresses as a brittle solid. The lithosphere ranges in thickness from 50 - 200 kmA and is fragmented into tectonic plates with boundaries where plates collide, diverge, or grind past each other.

A Wilson, M. (2000) Igneous Petrogenesis - A Global Tectonic Approach, Chapman and Hall, London.

What are the measurements of the heights of various plants in a experiment called?

In an experiment measuring plant heights, typically the heights of plants are recorded in either centimeters or inches. The measurements are taken from the base of the plant to the highest point of growth, such as the tip of the tallest leaf or stem. These measurements are important for assessing plant growth and health over time.

Does coconut water contain dissolved oxygen?

Yes, coconut water naturally contains dissolved oxygen due to the exposure of the coconut to air during its growth and maturity. This oxygen content may vary depending on factors such as processing methods and packaging.

In a controlled experiment what does a operational definition do?

An operational definition provides a clear and specific description of how a variable will be measured or manipulated in a study. It helps ensure that the variable is defined in a way that can be consistently applied and observed, making the results more reliable and replicable.

What are the materials for does hot water freeze faster than cold water?

The materials needed for the experiment are: two containers to hold the water, hot water, cold water, thermometers to measure the temperature, a freezer to freeze the water, and a timer to record the time it takes for each to freeze.

What is the difference between a hydrometer a hygrometer and a thermometer?

A hydrometer measures the specific gravity or density of a liquid, such as in testing the alcohol content of a solution. A hygrometer measures the relative humidity in the air. A thermometer measures temperature.

What is the heat of electricity?

Amount of electrical energy converted to heat energy when current flows through a conducting material.

According to Joule's Law, quantity of heat energy dissipated is given by,

Q=i2Rt

note
  1. in power transmission, aluminum wires* are used to reduce the heat energy loss
  2. using a step up transformer,we increase the voltage and reduced in current to reduce heat loss.(heat loss is proportional to the square of current.)

* though silver is the material with minimum resistance,it is too dear to be used as transmission wires.

As a motorcycle takes a sharp turn the type of motion that occurs is called?

The type of motion that occurs when a motorcycle takes a sharp turn is called angular motion or rotational motion. This is when the motorcycle rotates around a point due to the combination of its linear velocity and centrifugal force acting on it.

Why do plants need to make food?

they need chlorofill (found in leaves in the palisade cells) light energy, water and carbon dioxide. the word equation for photosynthesis is:
carbon dioxide + water --light---chlorofill---> glucose + oxygen + water

Why does land absorb more heat than water?

Land heats up faster than water because it has a lower specific heat capacity, meaning it requires less energy to raise its temperature. Additionally, land is denser than water, allowing it to store and transfer heat more efficiently. Finally, land surfaces are often darker and absorb more sunlight, further contributing to their ability to absorb heat.

How do clouds form in the continuous process?

Sun rays hit water and it evaporates into air where it is carried up into the atmosphere. As the warm water vapor rises through the air a cooling process begins that forms clouds. The clouds dump the water back into ponds, lakes, and streams and the process continues.

What are the composition of minerals?

Minerals are naturally occurring inorganic substances with a specific chemical composition and crystal structure. They are composed of elements such as silicon, oxygen, aluminum, iron, magnesium, sodium, and potassium, among others. Minerals form through various geological processes and can be identified based on their physical properties, including color, hardness, luster, and cleavage.

How strong is the bite force of an adult polar bear?

An adult polar bear's bite force is estimated to be around 1200 pounds per square inch (psi), which allows them to easily crush through bone and thick ice to catch their prey like seals. This powerful bite force is essential for their survival in the harsh Arctic environment.

What is the average bite force of an orca aka killer whale?

The average bite force of an orca, or killer whale, is around 19,000 pounds per square inch (psi). This powerful bite allows them to effortlessly crush the skulls of their prey, including marine mammals such as seals and sea lions.

What causes steam?

steam is water evaporating. It is caused when water molecules have enough energy to break free from the electromagnetic interactions that holds all the water together as a liquid.

Short form - steam is water so when it is hot it turns into gas.

Why is the iceberg melting?

The iceberg is melting due to rising global temperatures caused by climate change. Warmer temperatures are causing the ice to melt faster than it can replenish, leading to its gradual disappearance.

Describe the unique problems of cleaning up groundwater pollution?

Sometimes the only way to regain use of the aquifer is to treat the water at its point of use. For large water providers, this may mean installing costly treatment units consisting of special filters or evaporative towers called air strippers.