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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 is 122.18 rounded to the nearest whole number?

To round 122.18 to the nearest whole number, we look at the decimal value, which is 0.18. Since 0.18 is less than 0.5, we round down to the nearest whole number. Therefore, 122.18 rounded to the nearest whole number is 122.

Pattern of reactions of metals with oxygen?

When metals react with oxygen, they form metal oxides. The reactivity of metals with oxygen increases down the group in the periodic table. Highly reactive metals like sodium and potassium react vigorously with oxygen, while less reactive metals like copper and silver react slowly or do not react with oxygen at all under normal conditions.

Human resources vs natural resources?

Human resources refer to the people who work for an organization and contribute their skills and knowledge to achieve its goals. Natural resources, on the other hand, are materials or substances found in the environment that are used for economic gain, such as water, minerals, and forests. Human resources involve the labor force, while natural resources are the raw materials needed for production and consumption.

What does next step mean in a science project?

In a science project, the term "next step" typically refers to the subsequent action or procedure that needs to be taken in order to further investigate or expand upon the current findings or results. This could involve conducting additional experiments, collecting more data, analyzing results, or refining hypotheses. The next step is crucial in the scientific process as it helps researchers to build upon their previous work and advance their understanding of the topic being studied.

How many complete rotations would the earth make in the month of march?

It depends on what you mean by a month.

Some months have 30 days but others have 31 days. February has

28 days (and 29 in a leap year).

The Earth rotates once every day. So you can work it out from there. In January there are 31 days and so there are 31 rotations.

The Earth rotates in about 4 minutes less than 24 hours, if you want to be more exact.

Also there's the "lunar month". That's the time taken for the Moon to go through all its phases. That's about 29.5 days. So, in that case, the Earth rotates about 29 and a half times per month.

What happens when you put a plastic spoon in the microwave?

Well, when you put a plastic spoon in the microwave, it can melt or even catch fire because plastic isn't meant to be heated in that way. It's important to use microwave-safe materials like glass or ceramic to avoid any accidents and keep everything safe and sound in your kitchen. Just remember, there are always happy little accidents, but let's try to avoid them when we can.

What does revolution mean in space?

Rotation means rotating around in a full circle, or rotating around an object in a full circle. Rotation can also mean exchanging positions between people or objects. The meaning of the word can change slightly depending on the context of how it's used

What are some Non examples of niche?

  1. General food store selling a wide variety of products without specializing in any specific type of cuisine.
  2. A clothing brand that creates basic, versatile pieces for a broad audience without targeting a specific niche market.
  3. A social media platform aiming to appeal to all demographics without focusing on a unique user group or interest.

When a bunsen burner is lit below a wire gauze the flame initially burns below the gauze after sometime the flame burns both below and above the gauze explain this observation?

At first, the air above the gauze is cold and heavy therefore, it cannot be ignite. After sometime, the hair above gets heated and becomes light hence can be ignited thus the flame burns above the gauze.

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Why can you use chalk to write on the blackboard but not granite?

Chalk is softer than the slate (real or artificial) used on blackboards, so it will flake off as you write. Granite is harder than slate and will not flake, but rather cut into or mark the slate permanently.

Why it is not healthy to sleep in closed room with many potted plants?

Sleeping in a closed room with many potted plants can be unhealthy due to the plants releasing carbon dioxide at night through the process of respiration, which can reduce oxygen levels in the room. This can lead to symptoms such as headaches, dizziness, and fatigue, as well as potentially impacting cognitive function during sleep. Additionally, some plants release volatile organic compounds (VOCs) that may cause allergic reactions or respiratory issues in sensitive individuals. It is recommended to keep a well-ventilated room with a moderate number of plants for optimal indoor air quality.

How is a bent paper clip a physical change?

Well, honey, a bent paper clip is a physical change because the shape of the paper clip has been altered without changing its chemical composition. So, technically speaking, bending a paper clip doesn't turn it into a whole new element - it just gives it a new look. It's like giving a makeover to your stationery, darling.

What does it mean my curiosity began to generate heat?

it means that someones curiosity started to grow/ used by people when they are trying to express the feeling that their curiosity grew

What Are the differences and similarities of earth and Saturn?

Earth and Saturn are both planets in our solar system. However, Earth is a rocky planet with a diverse ecosystem and a relatively thin atmosphere, whereas Saturn is a gas giant with no solid surface and a thick atmosphere mostly composed of hydrogen and helium. Additionally, Earth has one large moon, while Saturn has over 80 known moons.

How many people in the world have a birthday on January-24?

Statistically speaking, approximately 0.274% of the world's population is born on January 24th. With the current global population estimated at around 7.9 billion people, this would mean roughly 21.6 million individuals share this birthdate. It's important to note that these figures are based on averages and may vary slightly due to factors like birth rates and population growth.

What is the altitude of the International Space Station?

The International Space Station (ISS) orbits Earth at an average altitude of approximately 420 kilometers (260 miles) above the Earth's surface. This altitude allows the ISS to remain in a stable orbit while still being close enough for supply missions and crew rotations. The ISS travels at a speed of about 28,000 kilometers per hour (17,500 miles per hour) to maintain its orbit around the Earth.

Why doesn't mcdonalds ice melt?

McDonald's ice is slow to melt due to its larger size and higher density compared to regular ice cubes. This is due to the way the ice is formed in their ice machines, which creates a harder and denser ice cube that melts more slowly.

Is 9 degrees Celsius hot or cold?

As far as normal climate experiences go, 9 C is a pleasant cool day (with a wind it might be described as brisk). A light jacket would be adequate. Joggers would still be in shorts and t-shirts

What is 2a x 2?

Oh, dude, 2a times 2 is just 4a. It's like multiplying 2 by 2 and then just throwing that 'a' in there for good measure. Easy peasy lemon squeezy.

How many liters of water equals 1 unit?

The volume of 1 unit can vary depending on the system of measurement being used. In the metric system, 1 unit typically refers to 1 liter of water, as the liter is the base unit for volume. Therefore, 1 liter of water is equivalent to 1 unit in the metric system.

What comes first length or width?

Well, honey, in the world of measurements, length usually comes before width. It's like asking if the chicken or the egg came first - you gotta have a starting point! So, when you're sizing something up, remember to measure that length first before you worry about the width.

How do you spy on siblings?

Well, darling, spying on siblings is all about stealth and cunning. Plant some hidden cameras, eavesdrop on their conversations, and maybe even recruit the family pet as a spy. Just remember, with great power comes great responsibility...or in this case, great potential for blackmail. Good luck, you little detective, you!

What are the benefits of having a portable solar generator?

A solar power generator produces electricity from sunlight, as opposed generators that use gasoline. The solar units are non-polluting and quiet (gasoline generators are quite noisy!), but they produce far less energy than gasoline generators and require that sunlight be available.

What other metals apart from iron may be attracted to a magnet?

Well, darling, apart from iron, you might find a magnet getting cozy with nickel and cobalt. These metals have some magnetic properties that make them irresistible to magnets. So, if you're looking to spice up your magnetic collection, those are the ones to keep an eye on.

Does Indium discovered in India?

Almost, but not quite. The name Indium was given because of the strong blue line in the emission spectrum. And was named after indigo, the blue clothing dye which originated in India. So that is the 'India' link.

The metal Indium was identified in 1863 by German scientists Reich and Richter, who were investigating some ores.

Indium has a long nucleosysnthesis pathway, thought to take thousands of years inside a star not too different in size from our Sun. In which an 109Ag (silver) captures a neutron, and then through a series of nuclear capture and emission steps, passes through 115In (Indium) to terminate (through another set of steps) as 121Sb (Antimony).

It is commonly found associated with the ores of Zinc but is also recovered from the production of other metals such as lead and copper.