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Solutions for Chapter 28: Life in the Universe

Astronomy Today | 8th Edition | ISBN: 9780321901675 | Authors: Eric Chaisson, Steve McMillan

Full solutions for Astronomy Today | 8th Edition

ISBN: 9780321901675

Astronomy Today | 8th Edition | ISBN: 9780321901675 | Authors: Eric Chaisson, Steve McMillan

Solutions for Chapter 28: Life in the Universe

This textbook survival guide was created for the textbook: Astronomy Today, edition: 8. Astronomy Today was written by and is associated to the ISBN: 9780321901675. Chapter 28: Life in the Universe includes 15 full step-by-step solutions. This expansive textbook survival guide covers the following chapters and their solutions. Since 15 problems in chapter 28: Life in the Universe have been answered, more than 3840 students have viewed full step-by-step solutions from this chapter.

Key Science Terms and definitions covered in this textbook
  • Cepheid variable

    A star whose brightness varies periodically because it expands and contracts. A type of pulsating star.

  • Cone of depression

    A cone-shaped depression in the water table immediately surrounding a well.

  • Desert pavement

    A layer of coarse pebbles and gravel created when wind removed the finer material.

  • Equatorial low

    A belt of low pressure lying near the equator and between the subtropical highs.

  • Fissure eruption

    An eruption in which lava is extruded from narrow fractures or cracks in the crust.

  • Fold

    A bent rock layer or series of layers that were originally horizontal and subsequently deformed.

  • Half-life

    The time required for one-half of the atoms of a radioactive substance to decay.

  • Incised meander

    Meandering channel that flows in a steep, narrow valley. They form either when an area is uplifted or when base level drops.

  • Köppen classification

    A system for classifying climates devised by Wladimir Köppen that is based on mean monthly and annual values of temperature and precipitation.

  • Lithification

    The process, generally cementation and/or compaction, of converting sediments to solid rock.

  • Natural leeves

    The elevated landforms that parallel some streams and act to confine their waters, except during floodstage.

  • Negative feedback mechanism

    A feedback mechanism that tends to maintain a system as it is—that is, maintain the status quo.

  • Obsidian

    A volcanic glass of felsic composition.

  • Paleozoic era

    A span on the geologic time scale between the eons of the Precambrian and Mesozoic era from about 540 million to 248 million years ago.

  • Parsec

    The distance at which an object would have a parallax angle of 1 second of arc (3.26 lightyears).

  • Plane of the ecliptic

    The imaginary plane that connects Earth’s orbit with the celestial sphere.

  • Pluvial lake

    A lake formed during a period of increased rainfall. During the Pleistocene epoch this occurred in some nonglaciated regions during periods of ice advance elsewhere.

  • Richter scale

    A scale of earthquake magnitude based on the motion of a seismograph.

  • Soil texture

    The relative proportions of clay, silt, and sand in a soil. Texture strongly influences the soil’s ability to retain and transmit water and air.

  • Stock

    A pluton similar to but smaller than a batholith.

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