2.1 Flash Cards

Question 1

Radiation

Answer 1

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

Question 2

Conduction

Answer 2

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.

Question 3

Density

Answer 3

the degree of compactness of a substance.

Question 4

Albedo

Answer 4

Albedo is the fraction of light that a surface reflects

Question 5

Accretion

Answer 5

the process of growth or increase, typically by the gradual accumulation of additional layers or matter.

Question 6

Isotope

Answer 6

each of two or more forms of the same element that contain equal numbers of protons but different numbers of neutrons in their nuclei, and hence differ in relative atomic mass but not in chemical properties; in particular, a radioactive form of an element.