294 Best Science Questions and Answers (Q&A) - ProProfs Discuss

Matz Lewis Clark, College student
Answered: Dec 12, 2018

The scientific name of corn is “Zea mays”. Corn belongs to the:
Kingdom: Plantae, Division: Magnoliophyta, Class: Liliopsida, Order: Poales, Family: Poaceae, Genus: Zea and the...Read More

8 Answers

1979 views

Which instrument is used to measure temperature?

L. Brett, Sales Manager
Answered: Jan 26, 2021

The instrument used for measuring temperature is a thermometer. Temperature generally can be defined as the state or degree of heat or coldness within a substance which can be measured. The...Read More

8 Answers

1808 views

How much atmospheric pressure can the human body take?

H. Barnes, Unemployed
Answered: Jan 12, 2021

Humans survive a range of atmospheric pressures. Provided there is pure oxygen available, a human can still breathe in around 12.2 % sea level air pressure. At the other extreme, the normal...Read More

6 Answers

1796 views

What is the study of stars called?

E. Dixon
Answered: Sep 30, 2020

The correct answer to this question is astronomy. This field of study was discovered by Nicolaus Copernicus. Astronomy combines a number of other subjects, including chemistry, math, and physics....Read More

9 Answers

1370 views

What is the amount of matter in an object?

H. Barnes, Unemployed
Answered: Jan 12, 2021

The amount of matter in an object is known as mass. In physics, the term mass refers to the quantity of matter which a body contains regardless of its volume. While the basic SI unit for...Read More

6 Answers

1126 views

How do you separate iron filings from talc powder?

H. Barnes, Unemployed
Answered: Jan 12, 2021

The best way to separate iron filings from talc powder is by using a magnet. This idea or separation technique is very simple because by moving a magnet over a mixture of iron filings and talc...Read More

7 Answers

1092 views

What is the process responsible for producing photons in a diode laser?

J. Goodman, Web Content Writer
Answered: Oct 10, 2018

This is the process wherein the electron that has become overly excited is brought back to the valence band but this time in an empty spot. This empty spot is known as the hole. Take note that...Read More

3 Answers

923 views

How does excitatory postsynaptic potential (EPSP) in a typical neuron occur?

C.Dorothy
Answered: Apr 18, 2018

A voltage change from -70 mV to -69.5 mV
In neuroscience, an excitatory postsynaptic potential (EPSP) is a postsynaptic potential that makes the postsynaptic neuron more inclined to...Read More

7 Answers

872 views

What should the absorbance be if light is passed through the same solution at the same wavelength and the light path is reduced to 1 cm?

H. Barnes, Unemployed
Answered: Jan 12, 2021

The best way to answer this question is by using a formula. The formula to use here is Absorbance= eLc (where e is the molar extinction coefficient, L is the path length, and c is the...Read More

7 Answers

860 views

What is the difference between gasoline and petrol?

C. Reyes
Answered: May 15, 2018

There really is no difference between gasoline and petrol. Both words refer to the same thing which is the fuel that is used in an internal combustion engine. In the United States and Canada,...Read More

7 Answers

748 views

What is the difference between Fact and Myth?

Matz Lewis Clark, College student
Answered: Jun 07, 2019

A fact is something that has been deemed truthful based on some scientific studies. A myth is something that is not proven to be true at the present time. Some even say that a myth is not true at...Read More

5 Answers

707 views

Why a man sitting in a moving bus suddenly moves forward when the bus suddenly stops?

C. Perez, Writer
Answered: Jan 12, 2021

The reason for this can be explained using Newton's first law of motion. The law states that a body will continue to be in a state of uniform motion unless it is acted upon by an external force....Read More

9 Answers

669 views

What is absent when coal is formed?

B. Mary, Health Care manager
Answered: Jan 18, 2021

Coal is a sedimentary rock that is created from the buildup and conservation of plant material. This creation takes place in a swamp environment. Coal is one of the three most important fossil...Read More

5 Answers

651 views

Which level of organization completes a series of tasks?

Malcolm Carneal, Digital Nomad
Answered: Jun 27, 2019

The correct answer to this question is organ system. As the name suggests this system is made from a group of organs. These organs work together to carry out functions in the body. There are...Read More

2 Answers

617 views

What are compounds that have the same empirical formula but different structural formulas called?

John Smith
Answered: Jun 24, 2021

Isomers For example, glucose and fructose are two common monosaccharides that have the same empirical and molecular formulaschobut different structural formulas. That is, they are both comp...Read More

1 Answer

611 views

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