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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

How much did the sears tower cost?

The Sears Tower in Chicago, Illinois is the tallest building in North America and the third tallest building in the world. It is 110 stories high and stands at 1450 feet - 1725 feet high if you include the antennas. The tower was designed by the architectural firm Skidmore, Owings & Merrill and was completed on May 3, 1973 at a cost of more than $175 million.

What does the phrase Odocoileus virginianus mean?

Kingdom: Animalia Phylum: Chordata Subphylum: Vertebrata Class: Mammalia Order: Artiodactyla Family: Cervidae Subfamily: Capreolinae Genus: Odocoileus Species: Odocoileus virginianus Its the white tailed deer.

What determines whether an object will rotate when a force is applied on it?

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Who are the most overrated scientists in the world?

Some scientists are overrated, but most are underrated. Although Albert Einstein is one of my favorite scientists, he is a bit overrated in my opinion, as he basically got the level of fame of a pop star for the photoelectric effect and two theories of relativity. Now don't get me wrong, he deserves all the credit for those two things, but the level of fame he got is a bit much. Not that any of this says anything, most scientists are underrated I think.

What determines how many stars are visible?

The visibility of stars is primarily determined by factors such as light pollution, atmospheric conditions, and the location on Earth. Light pollution from artificial sources can overwhelm the faint light of stars, while atmospheric conditions like clouds or humidity can block starlight. Additionally, stars are more visible in areas with minimal light pollution, such as rural locations or remote areas.

How does a snail move?

Snails move by alternating body contractions with stretching, with a proverbially low speed (1 mm/s is a typical speed for adult Helix lucorum [1]). They produce mucus in order to aid locomotion by reducing friction. The mucus also reduces the snail's risk of injury.
It Has A Muscular Foot to Move and Borrow with

How long will it take a human to travel from Earth to the Pegasus galaxy?

Forever because the "Pegasus galaxy" is a fictional galaxy in some sci-fi Stargate story. However, it's location is based on a real galaxy called Pegasus Dwarf Irregular Galaxy or Peg DIG, which you can reach in a mere 3 million years as soon as you learn to travel at the speed of light. The distance between Earth and Saturn varies depending on where the two planets are in their orbits around the sun. So the time it takes to travel to Saturn from Earth depends on the distance between the two planets at the time of launch. It also depends on the speed of the spacecraft and the path chosen. Below is a list of launch and arrival times between Earth and Saturn for some past missions. MISSION LAUNCHEDSATURN

ARRIVAL Voyager 1 Sept 5, 1977 Nov 12, 1980 Voyager 2 Aug 20, 1977 Aug 26, 1981 Pioneer 11 April 5, 1973 Sept 1, 1979

What are the names of the planets in our solar system?

As of 2017, it depends on whether you count major planets only, Major planets plus dwarf planets, or all planets.


The 8 major known planets in order from the Sun are:

  1. Mercury
  2. Venus
  3. Earth
  4. Mars
  5. Jupiter
  6. Saturn
  7. Uranus
  8. Neptune

If you list ALL 13 known planets in order, including dwarf planets, they are:


  1. Mercury
  2. Venus
  3. Earth
  4. Mars
  5. Ceres
  6. Jupiter
  7. Saturn
  8. Uranus
  9. Neptune
  10. Pluto
  11. Haumea
  12. Makemake
  13. Eris

Dwarf planets also fall under the category of minor planets, of which there are thousands in our solar system. As of 2017, the orbits of 734,274 minor planets were archived at the Minor Planet Center, 496,815 of which had received permanent numbers. The largest minor planet that is not considered to be a dwarf planet is Sedna.

What is coarce?

"Coarse" typically refers to something rough or having a larger particle size. It is often used to describe textures or materials that are not smooth or fine.

How are spacecraft navigated in space?

It will probably evolve over time, but so far ships are navigated in space by a combination of celestial navigation (orientation by sighting on various stars & the subject planets with a precision instrument), onboard inertial navigation (which tracks the movement of the ship by finely recording all relative forces of reaction with precision motion sensors), and Earth based tracking using ground stations. Each of these systems cross check each other to assure accuracy.

What makes earth a planet but not Pluto?

Earth is classified as a planet because it orbits the sun, has enough mass to form a roughly spherical shape, and has cleared its orbit of other debris. Pluto, on the other hand, does not meet the definition of a planet because it has not cleared its orbit and is part of a region with other similar sized objects called the Kuiper Belt.

How are xylem cells adapted to carry cells?

Xylem cells are adapted to carry water and minerals through the plant by having thick walls with lignin for support and durability. They are also dead at maturity, allowing for an uninterrupted pathway for water transport. Additionally, xylem cells can form vessels or tracheids to efficiently transport water vertically in plants.

Which of the following is essential to making ethical decisions about the application of scientific knowledge?

Considering the potential consequences of the application, ensuring informed consent of all parties involved, and consulting with relevant stakeholders are essential to making ethical decisions about the application of scientific knowledge.

How do you get rid of frogs from your septic system?

To safely remove frogs from your septic system, you can create a temporary ramp using a board or pipe to help them climb out. It's important to ensure the ramp is secure and allows the frogs to easily exit. Additionally, reducing sources of attraction like insects around the septic system can help discourage frogs from returning.

Is a silver pendant a magnetic material?

Silver should not be magnetic. The only possibility of a silver pendant being magnetic is if the silver is an alloy or a coating. Ferrous metals are the only materials that are magnetic in the traditional sense.

What are non examples of lithosphere?

  1. Oceans: Oceans are not made up of solid lithosphere, but rather liquids and gases.
  2. Volcanoes: Volcanoes are composed of molten rock, which is not part of the lithosphere.
  3. Soil: Soil is composed of organic matter and weathered rocks, and is not part of the lithosphere.
  4. Atmosphere: The atmosphere is composed of gases and does not form part of the lithosphere.
  5. Subduction Zones: Subduction Zones are areas of Earth's crust where one plate slides beneath another, and are not part of the lithosphere.

What are the two principal sources of heat in the Earth Which has a greater contribution tosurface heat flux?

The two principal sources of heat are the Sun and the Earth itself via geothermal heat.

The sun's heat will vary more than geothermal, and therefore contribute more to flux.

What are The disadvantages to using land resources?

Some disadvantages of using land resources include deforestation, habitat destruction, soil erosion, and loss of biodiversity. Exploiting land resources can also lead to land degradation, desertification, and disruption of ecosystems.

The study of rocks and minerals is part of what branch of science?

The study of rocks and minerals is part of geology, which is the branch of science that focuses on the Earth's physical structure, substance, history, and processes. Geologists analyze the composition, formation, and properties of rocks and minerals to understand the Earth's geological processes and history.

How much surfaces does the earth have?

the surface of the moon is 0.074 of earth's surface area

Water seeping into the joints or seams of a rock and then freezing can weather the rock. This is an example of what type of weathering?

This is an example of mechanical weathering, specifically known as frost wedging. As water freezes, it expands and exerts pressure on the rock, causing it to break apart. Over time, this process can lead to the disintegration of the rock into smaller pieces.

Why are measurements needed for science?

Not only is measurement important in science and the chemical industry, it is also essential in farming, engineering, construction, manufacturing, commerce, and numerous other occupations and activities. Without the ability to measure, it would be difficult for scientists to conduct experiments or form theories.

How do scientists best determine the age of the earth?

The best estimate for Earth's age is based on radiometric dating of fragments from the Canyon Diablo iron meteorite. From the fragments, scientists calculated the relative abundances of elements that formed as radioactive uranium decayed over billions of years.

How long are alligator snapping turtles at birth?

When young alligator snapping turtles hatch, they are two to three inches long.