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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.

203,801 Questions

What planet is baking hot and freezing cold?

Mercury is the planet that experiences extreme temperature variations, with surface temperatures reaching up to 800°F (430°C) during the day and dropping to -290°F (-180°C) at night. This is due to its thin atmosphere that is unable to retain heat, leading to rapid temperature changes between day and night.

What is absolute geologic time?

Absolute geologic time refers to the chronological age of a rock or event, typically measured in years. It is determined using radiometric dating techniques, which allow for precise dating of rocks and fossils based on the decay of radioactive isotopes. This provides a more accurate and quantitative way to establish the timing of geologic events in Earth's history.

What are galaxies classified as?

Galaxies are classified based on their shape and structure. The main types of galaxies are spiral, elliptical, and irregular. Spiral galaxies have distinct arms of stars, elliptical galaxies are more oval-shaped with older stars, and irregular galaxies have a less defined shape.

Can you see bloodymary inlight?

No, you cannot see Bloody Mary in the light. The legend typically involves summoning her in a dark room with a mirror. Bloody Mary is said to appear in the mirror when specific rituals are performed in the dark.

What is an accepting nature?

Having an accepting nature means being open-minded, non-judgmental, and tolerant towards others' differences, beliefs, and opinions. It involves embracing diversity and showing understanding and compassion towards people and their individual differences.

Why is a cat a good pet?

Cats make good pets because they are independent animals that can entertain themselves, require minimal grooming, and often form strong bonds with their owners. They are also known for their playful and affectionate nature.

Are mirages real?

Yes, mirages are real and are caused by the bending of light rays due to variations in air temperature. This bending of light can create optical illusions, making distant objects appear distorted or displaced.

Who created the three laws dealing with the creation of various spectra?

Niels Bohr proposed the three laws regarding the creation of various spectra. These laws are used to explain the spectral lines of hydrogen and other elements.

Why does the hubble space telescope orbit in the exosphere and not closer to earth?

To zoom VERY far in on certain objects in space (ones that people at NASA instruct it to look at) and takes high quality pictures for us to study and learn from so we can understand more about our universe. Google "Hubble Pictures" online and see just some of the beautiful and high-quality pictures Hubble has taken. It is also in space because, if observed from the Earth's surface, the atmosphere would interfere with the way we perceive the outer universe.

What is an example of a space spin off?

By "space spin-off," I assume that you mean something along the lines of "stuff we use here that we might not have without space programs." There are many such things. The one that always pops to my mind is the powdered, orange-flavored beverage (when mixed with water) "Tang." More importantly, given that rockets don't grow on trees, you can thank the space program for national defense and the satellites that allow you to place a call from anywhere to anywhere. Other than things like that, and allowing you to know a great deal about the universe that you live in, space programs are a waste of time and money.

Is bill nye a scientist or actor?

Bill Nye is a science educator with a background in mechanical engineering, not a scientist. While he is known for his work in science communication and education, he is not actively involved in research or conducting scientific experiments.

What is the height of the shadow when the distance from the light source to object is 24cm?

It depends what angle the light is at, for example the shadow would be longer if the light was looking atr the object from the side (45 degrees) than it would be if looking at it from the top of the object(180 degrees).

How much is 1 atmosphere?

the atmosphere around us is troposphere in which we live and it is present upto 20km above earth..

What is the high temperature of the desert?

The hottest air temperature ever reliably recorded in a desert was 134

degrees F in Death Valley of the Mojave Desert in California on July 10,

1913. An even warmer temperature of 136 degrees was recorded a few years

later in Libya but that has been discounted as inaccurate as it was not

properly measured by untrained Italian soldiers. A recent ground

temperature was measured by a satellite in Iran that was even hotter but

the ground temperature does not reflect the temperature of the air above

it. Anyone who has walked barefoot over an asphalt parking lot in summer

can attest to that.

What year was the magnetic compass made?

The magnetic compass was invented in ancient China during the Han Dynasty around the 2nd century BC. It was a significant navigation tool that revolutionized travel and exploration.

Why does that sun set earlier on the east coast?

The sun appears to set earlier on the east coast compared to the west coast due to the curvature of the Earth. As the Earth rotates from west to east, areas on the east coast experience sunset before regions to the west. This difference in timing is a result of the Earth's rotation and the planet's shape.

What is a gravestone made of?

Gravestones used to made out of all kinds of materials but it was found that they are not durable and don't withstand the weather. Nowadays, most gravestones are made of granite or marble because these are more durable and withstand time.

Why isn't the sky red?

Sky appears blue because of more scattering of blue light. Red light has least scattering property. It is because of this property of red light, it is used as tail light in automobiles, or in army camps, as it can be seen from a distant place.

What happens if the mirror reflects direct sunlight to the stage aperture?

If a mirror reflects direct sunlight into a stage aperture, it can create a blinding effect for performers or audience members. This intense light can be distracting and potentially harmful to the eyes. It is important to avoid such situations for the safety and comfort of those involved.

Do people grow faster in space?

No, people do not grow faster in space. The lack of gravitational force in space can cause the spine to lengthen temporarily, but this does not result in permanent growth. The growth rate of an individual is primarily determined by genetics and nutrition, not by the absence of gravity.

What happen to Laocoon?

Athena sends two giant sea serpents to strangle and kill him and his two sons.

In another version of the story, it was said that Poseidon sent the sea serpents to strangle and kill Laocoön and his two sons.

Where would you find diamonds?

Diamonds are typically mined from the Earth's mantle, often found in volcanic kimberlite pipes or alluvial deposits. Major diamond-producing countries include Botswana, Russia, Canada, and Australia. Diamonds can also be found in jewelry stores or online retailers.

How does the temperature change with altitude in the thermosphere?

In the thermosphere, the temperature increases with altitude due to the absorption of high-energy solar radiation by the few particles present in this layer. Despite the high temperatures in the thermosphere, the low density of particles means that the air would feel extremely cold to the touch.

Does a cheetah have a endoskeleton or exoskeleton?

Endoskeleton,

it is a mammal, and no mammals have exoskeletons. You'll find that most animals in the insects and arachnids section of the animal groups, do however. the exoskeletons on insect are often mistaken for a "shell" of the animal.

What are curtains that provide privacy and people can't see in but let light in to the room?

Sheer curtains are a great option for providing privacy by preventing people from seeing in while still allowing natural light to filter through. They are lightweight and airy, creating a bright and open feel to the room while maintaining a level of privacy.