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Science Experiments

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

11,083 Questions

What would happen if water is running out of the drain faster than the spigot is putting water into the tub?

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If the water is draining faster than the spigot is supplying water, the water level in the tub will decrease until the drain and spigot reach equilibrium. This may result in an empty tub if the drain efficiency is higher than the spigot's flow rate.

What is the average year of hurricanes?

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The average year of hurricanes varies, but generally peaks between June and November in the Atlantic Ocean. This is known as hurricane season, with the most activity typically occurring in September. The Pacific hurricane season tends to be longer, running from May to November.

What are the 5 categories of a star?

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The five categories of a star classification are O, B, A, F, G, K, and M. These categories are based on the star's surface temperature, color, and spectral features. O stars are the hottest and bluest, while M stars are the coolest and reddest.

What is the chemical definition of meniscus?

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The meniscus is the curved surface of a liquid in a narrow container caused by surface tension. It is formed because the liquid molecules at the edge of the container are attracted more strongly to the container than to other liquid molecules.

When you add an acid to an alkali it changes to a neutral which colour change would this show with an indicator?

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The color change would depend on the specific indicator used. For example, phenolphthalein changes from pink in alkaline solutions to colorless in acidic solutions, while litmus paper changes from blue in alkaline solutions to red in acidic solutions.

Is there less gravitational pull the higher you go?

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Yes, gravitational pull decreases as you move farther from the center of the Earth, so you will experience less gravitational pull the higher you go above the Earth's surface. This is due to the inverse square law, which states that gravitational force decreases with the square of the distance between two objects.

What is the word that defines an investigation that is controlled?

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The word that defines an investigation that is controlled is "regulated."

In 1977 a team led by which embryologist created history by cloning the first adult mammal?

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In 1997, a team led by embryologist Dr. Ian Wilmut successfully cloned the first adult mammal, a sheep named Dolly. This groundbreaking achievement demonstrated that it is possible to clone mammals from adult cells.

Who first used the cork for a laboratory apparatus?

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The first recorded use of cork in a laboratory apparatus is attributed to the German chemist Johann Rudolf Glauber in the 17th century. Glauber used cork stoppers in his chemical experiments to seal bottles.

How many times does the moon go round earth?

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The moon orbits around the Earth approximately once every 27.3 days. This period is known as a synodic month or lunar month.

What role does nectar have in the process of pollination?

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Nectar serves as a reward for pollinators like bees, butterflies, and birds. By visiting flowers for nectar, these animals inadvertently transfer pollen between flowers, aiding in the pollination process that leads to fertilization and seed production. Essentially, nectar attracts pollinators, facilitating the transfer of pollen for plant reproduction.

Are PLANARIA segmented?

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No, planaria are not segmented. They are flatworms that have a simple body plan with bilateral symmetry. They do not have true segments like some other invertebrates.

Why would your weight be different on the moon but your mass will still be the same?

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Weight is the force of gravity acting on an object, so it depends on the gravitational pull at a specific location. The moon has less gravity than Earth, so you would weigh less on the moon. However, mass is a measure of the amount of matter in an object and remains the same regardless of the gravitational pull.

Will the sun become a white dwarf in the next 20 years?

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No, the sun will not become a white dwarf in the next 20 years. It is estimated that the sun will become a white dwarf in about 5 billion years as it reaches the end of its life cycle.

What is MPLC Chromatography?

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MPLC stands for Medium-Pressure Liquid Chromatography, which is a chromatographic technique used for separating and purifying compounds based on their interactions with a stationary phase as they pass through a column under medium pressure. It is a versatile and efficient method commonly used in the purification of natural products, peptides, and other organic compounds.

How does the transpiration affects the distribution of stomata in a leaf?

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Transpiration in a leaf causes water to be lost through the stomata, leading to a decrease in internal water pressure. To compensate for this loss, stomata are typically distributed more on the lower surface of a leaf where there is less direct sunlight and wind exposure, helping to reduce excessive water loss and maintain the plant's hydration levels.

What is the lab equipment for separating kerosene water mixture?

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The lab equipment commonly used for separating a kerosene-water mixture is a separating funnel. The mixture is poured into the funnel, and due to the immiscibility of kerosene and water, they separate into distinct layers with the denser water sinking to the bottom and the lighter kerosene floating on top. The tap at the bottom of the funnel can then be opened to drain off the water, allowing for the collection of the kerosene.

What do animals hear different to humans?

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Animals may hear higher frequencies than humans, such as ultrasound in bats or dolphins. Some animals, like dogs, can detect sound at greater distances than humans. Additionally, some animals have specialized ear structures that aid in their hearing abilities, like the large ears of certain owl species for effective hunting at night.

Why are magnetosphere so important?

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The magnetosphere is important because it acts as a protective shield around Earth, deflecting harmful solar wind and cosmic rays. Without the magnetosphere, these particles could strip away the atmosphere and make it difficult for life to exist on Earth. Additionally, the magnetosphere plays a key role in generating phenomena such as the auroras.

Why rainbow is not formed or seen in moonlight or in dark or at night?

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Rainbows are formed when sunlight is refracted and reflected through water droplets in the atmosphere. Moonlight is not bright enough to create the same effect. Similarly, rainbows are not visible in the dark or at night because the sunlight necessary for their formation is absent.

What are the effects of increasing temperature on the rate of digestion?

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Increasing temperature can initially increase the rate of digestion by speeding up enzyme activity, which helps break down food faster. However, if the temperature gets too high, it can denature enzymes and disrupt the digestive process, leading to a decrease in digestion efficiency. Optimal temperature ranges for digestion vary depending on the specific enzymes involved.

Light and heat given off by the sun is called?

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The light and heat given off by the sun is called solar energy. Solar energy is produced by nuclear fusion reactions in the sun's core, which create electromagnetic radiation that reaches the Earth.

How is a spectrophotometer calibrated?

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A spectrophotometer is calibrated by using known standards, such as neutral density filters or certified reference materials, to verify the accuracy and precision of the instrument. The calibration process involves adjusting the instrument's settings to match the expected absorbance values of the standards at specific wavelengths. Regular calibration helps ensure the spectrophotometer provides accurate and reliable measurements over time.

How does a triamine act as a catalyst?

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A triamine can act as a catalyst by facilitating a chemical reaction without being consumed in the process. It can interact with substrates to lower the activation energy required for the reaction, thereby increasing the rate of the reaction. Triamines can also enhance the formation of intermediates or stabilize transition states, promoting the desired reaction pathway.

What animal does not have a stomach?

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Jellyfish and sea anemones do not have a stomach. They have a simple digestive system that allows them to directly absorb nutrients through their body walls.