Exam 2

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

B  planets move in elliptical orbits around the sun.

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

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

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  prominences

D  supergranules

E  flares

A  attract, negative

B  repel, negative

C  repel, positive

D  attract, positive

A  nuclear fusion

B  nuclear fission

C  nuclear recombination

D  nuclear splitting

A  core.

B  chromosphere.

C  photosphere.

D  corona.

A  heat and rotation

B  pressure and gravity

C  radiation and heat

D  core temperature and surface temperature

A  sunspots.

B  the corona.

C  solar flares.

D  granules.

E  solar prominences.

A  30

B  200

C  120

D  150

E  50

A  one day

B  three weeks

C  a month

D  one week

E  two weeks

A  adaptive optics

B  photometry

C  active optics

D  spherical aberration

E  chromatic aberration

A  Infrared radiation

B  Gamma-rays

C  Ultraviolet light

D  X-rays

A  a small diameter refracting telescope.

B  a small diameter reflecting telescope.

C  a large diameter refracting telescope.

D  a large diameter reflecting telescope.

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

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

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

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

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

A  photometer.

B  charge-coupled device.

C  spectrograph.

D  core collapse device.

A  two

B  three

C  four or more

D  None of the above.

A  FALSE

B  TRUE

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

B  the sun emits more infrared radiation than ultraviolet radiation.

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

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

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

A  it was liquid at some point in the past

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 formed first from denser material and then afterward accreted lighter material

A  fusion of hydrogen to helium

B  cratering

C  flooding

D  differentiation

E  slow surface evolution

A  it has both a liquid and solid core

B  it was liquid at some point in the past

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

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

A  FALSE

B  TRUE

A  equinox

B  celestial pole

C  meridian

D  zenith

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

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

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

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

A  Jupiter

B  Mars

C  Earth

D  Neptune

E  Saturn

A  Disks are rare around young stars.

B  Disks are common around young stars.

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

D  Planets are round.

A  Uranus

B  Jupiter

C  Mercury

D  Earth

E  Mars

A  Venus

B  asteroids

C  Saturn

D  Pluto

E  comets

A  carbon dating of rocks from mountains on the Earth

B  measuring the number of craters per square meter on Mercury

C  radioactive dating of rocks retrieved from the Moon

D  measurement of the magnetic field variations on the sea floor

A  samples of earth rocks.

B  samples of lunar rocks.

C  samples of meteorites.

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  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

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

D  All of the above.

A  low average density

B  very few satellites

C  small diameters

D  craters in old surfaces

E  orbits inside the asteroid belt