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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 animals live near the Three Sisters?

I assume you mean the mountains in Oregon, Three Sisters.

There is a variety of animals and wildlife that live there. Deer, Elk, Black Bears, Trout, Coyotes, Foxes, Various birds including Eagles. There's more than one variety of eagle including bald eagles and golden eagles. Various insects and rodents, Squirrels. Snakes including garter snakes, gopher snakes, and the poisonous rattle snake.

What does hypotheses means in science?

In science, a hypothesis is an educated guess or prediction about the relationship between two variables that can be tested and supported or falsified with evidence. It's a statement about a specific research question that outlines the expected result of an experiment. A hypothesis is constructed before any research is done, except for a basic background review.

A hypothesis is more narrow in scope and more mutable than a scientific theory, which is a broad-reaching collection of scientific knowledge. A hypothesis is the predicted outcome of a specific experiment and has three parts:

Explanation: The hypothesized relationship between the variables being tested

Independent variable: Causes something to change or occur in the experiment

Dependent variable: Measured as the outcome of the experiment

For example, a hypothesis could be "Dandelions growing in nitrogen-rich soils for two weeks develop larger leaves than those in nitrogen-poor soils because nitrogen stimulates vegetative growth".

Why is gum wrapped in foil?

Chewing gum is wrapped and packaged in strips because it is alot easier than wrapping it round...you can just fold the "paper" easily. * Try making a round piece of chewing gum, wrap it, and then see if the wrapping will stay... SEE HOW HARD IT IS!!

Is penicillin is a disinfectant?

Penicillin is an antibiotic, not a disinfectant. Antibiotics are used to kill or inhibit the growth of bacteria that cause infections in the body. Disinfectants, on the other hand, are used to kill microorganisms on surfaces and objects to prevent the spread of infection.

What is a neutralzation reaction?

A neutralization reaction occurs between an acid and a base. As you may know, acids have a pH between 0 and 7, neutral substances have a pH of 7, and bases have a pH between 7 and 14. In a neutralization reaction, the pH's of the reactants are such the product(s) has/ have a pH of 7.

Is Pt a non metal?

Platinum (Pt) is a metal and not a non metal. You can verify this by using the Periodic Table of Elements.

Can you name a solid that turns straight from a solid into a gas?

some solids turn straight into a gas when heated. This process is called sublimation. A good example is solid carbon dioxide, also called dry ice. At atmospheric pressure, it turns straight into gaseous carbon dioxide

A substance with density equal to 2.1 g cm3 would it float or sink?

The substance would sink in water since its density is higher than that of water, which is 1 g/cm3. Objects with densities higher than the liquid they are placed in will sink, while those with densities lower than the liquid will float.

What is 3.14159 better known as?

The value of this decimal numbers is very popular and known to be "pie".

Which is basically equals to 22/7.

Where does most of the atmosphere oxygen come from?

From plant life.

Animals including humans exhale carbon dioxide.

Carbon dioxide is a heavy gas and fall to the ground.

Whereupon it is absorbed by plant life.

Under the process of photosynthesis, carbon dioxide in the plant is broken down into carbon and oxygen.

The carbon is retained in the plant as biomass, and the oxygen is released back into the atmosphere, for animals to breathe.

It is all part of the oxygen/carbon cycle.

When the moon is in the middle of the lineup and gets between the earth and the sun?

What happens is a solar eclipse. The Moon casts a shadow on the Earth. This does not happen on each revolution because the Moon's orbit it tilted, so an eclipse only happens when the Moon is crossing the ecliptic at the right moment.

Why some stars visible in march but not visible in September?

Because, e stars are in the sky in the same time of the year. In March, they appear high above the horizon, and in September they appear low.

What metal is magnetic?

The most common magnetic metals are iron, cobalt, and nickel. These metals exhibit strong magnetic properties and are often used in various applications requiring magnets.

Are black holes hot or cold in terms of temperature?

Well, darling, black holes are actually not hot or cold like your morning latte - they don't have a temperature as we know it. They're like cosmic vacuum cleaners sucking in everything, including light, but they don't give off any heat. So, in universe terms, they're truly ice cold.

Does the weight of the Earth change over time?

Oh honey, the Earth's weight doesn't change much. It's all that gravitational pull keeping everything in check. Of course, with cosmic stuff like meteorites adding a little extra weight now and then, but she's pretty consistent overall.

How can I protect my eyes from the harmful effects of an eclipse?

To protect your eyes from the harmful effects of an eclipse, you should never look directly at the sun during the event. Use certified solar viewing glasses or a solar viewer to safely observe the eclipse. Regular sunglasses are not sufficient protection.

How can telescopes be used in scientific research to study distant celestial objects and phenomena?

Telescopes are used in scientific research to study distant celestial objects and phenomena by collecting and focusing light from these objects. This allows scientists to observe and analyze the properties of stars, galaxies, planets, and other celestial bodies. Telescopes can also detect different types of radiation, such as infrared or ultraviolet, which provide valuable information about the composition and behavior of these objects. By studying the light emitted or reflected by distant celestial objects, scientists can gain insights into their structure, evolution, and interactions with other objects in the universe.

How does the field of astrophysics utilize mathematical principles to study celestial phenomena and understand the universe?

Astrophysics uses mathematical principles to analyze data, create models, and make predictions about celestial phenomena. Equations and calculations help scientists understand the behavior of stars, galaxies, and other cosmic objects, as well as the fundamental laws of the universe. Math is essential for interpreting observations, testing theories, and advancing our knowledge of the cosmos.

How does the moon's position change over time?

The moon's position changes over time due to its orbit around the Earth. This orbit causes the moon to move in a predictable pattern, resulting in different phases such as full moon, new moon, and crescent moon. The moon's position also changes in relation to the sun, leading to eclipses and other celestial events.

How does the sun's temperature change over time?

Well, hon, the sun isn't one to play predictable. Its temperature actually increases as it ages, and it's got a lot of life left in it. So, hold on to your hats - the sun's just getting started heating things up.

How fast is the comet moving through space?

Well, honey, that comet is cruising along at an average speed of around 50 kilometers per second. It's zipping through space faster than you can say "shoot for the stars, darling!" So, buckle up and enjoy the interstellar ride!

How long do sunsets typically last in different parts of the world?

Well, sweetie, sunsets typically last around 20-30 minutes globally, but it can vary depending on the location. In places like the North or South Poles, you can enjoy a leisurely sunset that lasts for several hours, while near the equator, it's more like a quickie that's over in a flash. Just like good gossip, sunsets come and go, so make sure to savor them while you can!