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Scientists
This category is for questions about the people who apply the scientific method to solve problems, introduce new concepts, and strive to explain the natural world.
9,527 Questions
What are two units scientist use to measure temperature?
The basic unit is Kelvin, which is a measure of thermodynamic temperature. Based on this unit, the more common unit is degrees Celsius.
How did Alexander Flemming find penicillin?
The mold was growing in one of his experimental bacterial cultures and killing them, ruining the experiment. Others might have thrown it out, he determined what the mold was making that killed bacteria.
Why do scientists study space?
Here is why we study space:
- Anything you study makes you smarter!
- Space includes the study of planets, and we live on a planet.
- Studying space helps us learn how the universe works.
- Studying space helps us look out for dangers like asteroids and sun flares.
- Studying space helps us find new places where humans can live so that we don't have to keep using up all our resources on this planet because we're so overpopulated.
Scientist studies structure of matter?
Principally chemists and physicists. However, the subject is also of interest to meteorologists (clouds have interesting structure, for instance), and biologists (the structures of DNA and other biologically significant chemicals are important), amongst others.
they invented new thihgs that we use in our daily life and can even save lives by the improvement of technology and machines.
Why are trace elements important?
Plants get trace elements - micro nutrients from the soil or from fertilizer supplied by the grower. Animals get micro nutrients from plants. Humans can by food fortified with micro nutrients eg calcium in milk.
Why do scientists count a species population?
Add up the individuals who come into an Area and subtract those who leave the area.
What did Thomson's cathode-ray tube experiments help scientists learn?
Thomson's cathode-ray tube experiments helped scientists learn about electrodes and that atoms were comprised of many small particles, which they did not know existed. They also learned from this tube that all the electrons were the same regardless of what elements they came from.
Antony van Leeuwenhoek- created the first simple microscope
Robert Hooke- first observed cork cells under a compound microscope
Matthias Schleiden- Proved animals are made up of cells
Theodor Schwann- Proved Plants are made up of cells
Rudolf Virchow- Proved all cells arise from pre-existing cells.
Hope this helps(OmegaR)
What do scientists use to decide whether a substance is an element or compound?
Depends on what compound you are referring to. Organic or Inorganic. Basically, you can use EDX to identify the elements within the compound, work better for inorganic compound. As for organic compound, FTIR can be used.
What does Dalton's Law of Partial Pressures say?
The total pressure of a gas mixture is the sum of the individual pressures.
What are the two ways for a scientist to use a hand lens?
A magnifying glass (called a hand lens in laboratory contexts) is a convex lens that is used to produce a magnified image of an object. A hand lens can be used to magnify an object to make it easier to see or also to focus light.
What are scientists who classify living things?
Are you sure this is true?
Because if it is then other stuff will happen.
What are 3 things scientists use a microscope for?
Microscopes are very usefull tools to science and aid in a wide variety of tasks. They can be used to examine miroscopic life, perform extremely tiny tasks such as with microscopic circuits or machines, or to study chemical or geological samples like microscopic crystals formed by many substances.
Do scientists use the measure of density to tell if something will float?
yes. for example; Ice is just frozen water, right? So why does ice float in water? When we find the mass of an ice cube and divide that by its volume, we come up with about .92. Ninety-two hundredths is less than one, so the density of ice is less then that of water. Ice floats because the ratio of its mass to volume is less than one.
