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malfutka [58]
2 years ago
13

Define Heat, Thermal Energy, Conduction, Convection and Radiation

Biology
1 answer:
Leya [2.2K]2 years ago
7 0
Heat:  it is a form of energy associated with the movement of atoms and molecules in any material.<span>The higher the temperature of a material, the faster the atoms are moving, and hence the greater the amount of energy present as </span>heat<span>. 

Thermal Energy: t</span>he internalenergy<span> of an object due to the kinetic </span>energy<span> of its atoms and/or molecules. The atoms and/or molecules of a hotter object have greater kinetic</span>energy<span> than those of a colder one, in the form of vibrational, rotational, or, in the case of a gas, translational motion.

Conduction: </span><span>the process by which heat or electricity is directly transmitted through a substance when there is a difference of temperature or of electrical potential between adjoining regions, without movement of the material.

Convection: </span>the movement caused within a fluid by the tendency of hotter and therefore less dense material to rise, and colder, denser material to sink under the influence of gravity, which consequently results in transfer of heat.

Radiation: the emission of energy as electromagnetic waves or as moving subatomic particles, especially high-energy particles that cause ionization.

Hope this helped :)
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3 years ago
Explain two theories of color vision in humans. How does one of them explain color deficiency?
Alborosie
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3 years ago
The half life of Carbon 14 is 5500 years. How many years will pass for a 30 gram sample to reach 3.75 grams
sertanlavr [38]
Half life is the time taken by a radioactive isotope to decay by half of its original mass. In this case the half life of carbon-14 is 5500 years. 
The original mass is 30 g and the new mass is 3.75 g. 
New mass = Original mass × (1/2)^n, where n is the number of half lives; 
3.75 = 30 × (1/2)^n
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 n = 3 
Thus, the time taken will be; 3 × 5500 = 16500 years.

6 0
2 years ago
The sedimentation coefficient:
chubhunter [2.5K]

Answer:

option D is incorrect

Explanation:

the sedimentation coefficient is measured in Svedberg units named after the scientist Theodore Svedberg. the shape of the particle being measured in the ultracentrifuge is one of the factors that determines the sedimentation coefficient. the values are usually not additive as the sedimentation coefficient is based on the rate at which a particle sediments in an ultracentrifuge and not on the size. for example, the sedimentation coefficient of eukaryotic ribosome is 80S but is made up of the 60S large subunit and the 40S small subunit.

8 0
3 years ago
The structural integrity of bacteria is to peptidoglycan as the structural integrity of plant spores is to
Westkost [7]

Answer:

Lignin.

Explanation:

The structural integrity of plant spores is lignin that is present in many parts of the plant. This lignin provides hardness to the plant body which help them to stand the plant erect. If this lignin is not present in the plant body the plant will not stand erected. This lignin is present in large amount in the stem of plant body so that's why the lignin provides structural integrity to plant spores

7 0
2 years ago
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