Exam 2

A  planets move in elliptical orbits around the sun.

B  uniform circular motion is adequate to describe the motion of all planets.

C  the planets all move around the Earth in elliptical orbits.

D  the planets move at a constant speeds at all points in their orbits.

A  high temperature and low density

B  low temperature and low density

C  low temperature and high density

D  high temperature and high density

A  spicules

B  solar wind

C  supergranules

D  flares

E  prominences

A  attract, positive

B  repel, negative

C  attract, negative

D  repel, positive

A  nuclear recombination

B  nuclear splitting

C  nuclear fission

D  nuclear fusion

A  corona.

B  photosphere.

C  chromosphere.

D  core.

A  core temperature and surface temperature

B  radiation and heat

C  heat and rotation

D  pressure and gravity

A  solar flares.

B  the corona.

C  granules.

D  solar prominences.

E  sunspots.

A  200

B  30

C  150

D  50

E  120

A  three weeks

B  one week

C  one day

D  two weeks

E  a month

A  spherical aberration

B  adaptive optics

C  active optics

D  photometry

E  chromatic aberration

A  Ultraviolet light

B  Infrared radiation

C  Gamma-rays

D  X-rays

A  a small diameter reflecting telescope.

B  a large diameter reflecting telescope.

C  a large diameter refracting telescope.

D  a small diameter refracting telescope.

A  Radio waves would have a longer wavelength and travel the same speed as gamma rays

B  Gamma rays would have a shorter wavelength and a lower energy than radio waves.

C  Radio waves would have a lower energy and would travel slower than gamma rays.

D  Radio waves would have a shorter wavelength and higher energy than gamma rays.

E  Gamma rays would have a lower frequency and travel the same speed as radio waves.

A  spectrograph.

B  charge-coupled device.

C  photometer.

D  core collapse device.

A  two

B  three

C  four or more

D  None of the above.

A  TRUE

B  FALSE

A  carbon dioxide is transparent to visible light and opaque to infrared radiation.

B  the sun emits more infrared radiation than ultraviolet radiation.

C  ozone is transparent to infrared radiation and opaque to ultraviolet radiation.

D  ozone is transparent to visible light and opaque to infrared radiation.

E  carbon dioxide is transparent to infrared radiation and opaque to ultraviolet radiation.

A  it formed first from denser material and then afterward accreted lighter material

B  it has both a liquid and solid core

C  only the crust is solid; the rest of Earth’s interior is liquid

D  it was liquid at some point in the past

A  fusion of hydrogen to helium

B  flooding

C  cratering

D  slow surface evolution

E  differentiation

A  it was liquid at some point in the past

B  only the crust is solid; the rest of Earth’s interior is liquid

C  it formed first from denser material and then afterward accreted lighter material

D  it has both a liquid and solid core

A  FALSE

B  TRUE

A  celestial pole

B  equinox

C  zenith

D  meridian

A  The inner planets were too close to the Sun, and solar winds blew away their original gaseous atmospheres.

B  These gases were more abundant in the outer regions of the accretion disk where the outer planets formed.

C  Frequent early collisions by comets with the inner planets caused most of their original atmospheres to dissipate.

D  The outer planets grew massive quickly enough to gravitationally hold on to these gases before the solar wind dispersed the accretion disk.

A  Earth

B  Jupiter

C  Saturn

D  Neptune

E  Mars

A  Disks are common around young stars.

B  Disks are rare around young stars.

C  Planets are round.

D  The sun is the least massive object in the solar system.

A  Earth

B  Mercury

C  Jupiter

D  Uranus

E  Mars

A  comets

B  asteroids

C  Saturn

D  Venus

E  Pluto

A  measurement of the magnetic field variations on the sea floor

B  measuring the number of craters per square meter on Mercury

C  carbon dating of rocks from mountains on the Earth

D  radioactive dating of rocks retrieved from the Moon

A  samples of meteorites.

B  samples of lunar rocks.

C  samples of earth rocks.

D  none of the above

E  all of the above

A  Space debris is left over material from the early solar system that never formed into a planet.

B  Space debris was formed by the collision of objects after the planets formed.

C  Both Space debris is left over material from the early solar system that never formed into a planet and Space debris was formed by the collision of objects after the planets formed are correct

D  All of the above.

A  small diameters

B  orbits inside the asteroid belt

C  low average density

D  very few satellites

E  craters in old surfaces