Lecture Notes Flashcards

Flashcards from lecture notes.

1 meter

1650763.73 Wavelength emitted by krypton-86

1 kilogram

5.0188 X 10^25 atoms of C-12 isotope

1 second

9192631770 time periods of caesium 133 atom

Size of proton

10^-15 m

Size of atom

10^-10 m

Size of atomic nucleus

10^-15 m

Size of milky way galaxy

10^21 m

Mass of electron

10^-30 kg

Mass of proton

10^-27 kg

Mass of moon

10^23 kg

Mass of Earth

10^25 kg

Mass of Sun

10^30 kg

Mass of milky way galaxy

2 * 10^41 kg

Evolution

Change in order to reveal hidden potentialities

Introduced by

Herbert Spencer

Founder

Empedocles

Origin of life

Father Buffon

Big Bang

Abbe Lemaitre

Early Earth Atmosphere

Water vapors, methane, carbon dioxide and ammonia release from molten mass

Theory of Biogenesis

Life comes only from pre-existing life.

Morphological & Anatomical Evidences

Common Ancestry

Homologous organs

Origin same, Function different

Analogous organs

Origin different, Function Same

Homologous organs & evolution

Divergent Evolution

Analogous organs & evolution

Convergent Evolution

Big Bang

15 billion years ago

Origin of Universe

Thermo-nuclear explosion

Earth's Formation

4.6 billion years ago

Theory of Spontaneous Generation

Life came from decaying matter like mud.

Cosmozoic theory

Proposed by Richter & supported by Arrhenius

Theory of Biogenesis

Life came from pre-existing life

Disapproved spontaneous generation

Louis Pasteur

Boiled vegetables

Spallanzani

Modern theory of origin of life

Oparin - Haldane theory

Chemical Evolution - Atomic Stage

Free atoms that combined to form inorganic compounds

Chemical Evolution - Molecular Stage

Free atoms combined to form inorganic molecules.

NH3

Ammonia

CH4

Methane

Methane formation

Combination of water vapors & metallic carbides

Water of primitive oceans contained

Methane, ammonia, hydrogen, cyanide, carbides, Nitrides

Energy sources for early organic compound formation

UV rays, cosmic rays, heat of volcanic eruption

Miller - Urey Experiment scientists

Stanley Miller & Harold Urey