- 27.1: LO1 How long was the universe dominated by radiation?How hot was th...
- 27.2: What was the role of dark energy in the very early universe?
- 27.3: LO2 How did matter freeze out of the early radiationfield as the un...
- 27.4: LO3 Describe how the relative importance of matter andradiation cha...
- 27.5: LO4 When and how did the first helium nuclei form?
- 27.6: Why do all stars, regardless of their abundance of heavy elements,s...
- 27.7: Why didnt heavier and heavier elements form in the earlyuniverse, a...
- 27.8: POS How do we know that most matter in the universe isnot normal?
- 27.9: When and how did the first atoms form?
- 27.10: LO5 How can we observe the epoch at which the universebecame transp...
- 27.11: LO6 What is the epoch of inflation, and what happened tothe early u...
- 27.12: POS How does inflation solve the horizon and flatnessproblems?
- 27.13: What does inflation tell us about the total density of theuniverse?
- 27.14: LO7 What is the connection between dark matter and theformation of ...
- 27.15: LO8 POS What key measurements were made by theCOBE and WMAP experim...
Solutions for Chapter 27: The Early Universe
Full solutions for Astronomy Today | 8th Edition
A theory that relates the formation of precipitation to supercooled clouds, freezing nuclei, and the different saturation levels of ice and liquid water.
A measure of the largest particle a stream can transport; a factor dependent on velocity.
Daily temperature range
The difference between the maximum and minimum temperatures for a day.
That portion of a stream’s load carried in solution.
The condition that exists when the distribution of winds within a given area results in a net horizontal outflow of air from the region. In divergence at lower levels the resulting deficit is compensated for by a downward movement of air from aloft; hence, areas of divergent winds are unfavorable to cloud formation and precipitation.
Very small galaxies, usually elliptical and lacking spiral arms.
A break in a rock mass along which movement has occurred.
Rounded lumps of hydrogenous sediment scattered on the ocean floor, consisting mainly of manganese and iron and usually containing small amounts of copper, nickel, and cobalt.
The layer of the atmosphere immediately above the stratosphere and characterized by decreasing temperatures with height.
The systematic study of fossils and the history of life on Earth.
A discrete amount (quantum) of electromagnetic energy.
A shell of incandescent gas expanding from a star.
Those pollutants emitted directly from identifiable sources.
The transfer of energy (heat) through space by electromagnetic waves.
A strong narrow surface or nearsurface current of short duration and high speed flowing seaward through the breaker zone at nearly right angles to the shore. It represents the return to the ocean of water that has been piled up on the shore by incoming waves.
The local name given a chinook wind in southern California.
A soil classification system consisting of six hierarchical categories based on observable soil characteristics. The system recognizes 12 soil orders.
The process of thrusting oceanic lithosphere into the mantle along a convergent boundary.
The upper level of the saturated zone of groundwater.
A pyroclastic rock composed of particles that have been fused together by the combination of heat still contained in the deposit after it has come to rest and by the weight of overlying material.