Exam 2

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

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

C  planets move in elliptical orbits around the sun.

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

A  low temperature and high density

B  low temperature and low density

C  high temperature and high density

D  high temperature and low density

A  spicules

B  supergranules

C  solar wind

D  prominences

E  flares

A  attract, positive

B  repel, negative

C  repel, positive

D  attract, negative

A  nuclear fusion

B  nuclear fission

C  nuclear recombination

D  nuclear splitting

A  chromosphere.

B  core.

C  photosphere.

D  corona.

A  radiation and heat

B  heat and rotation

C  pressure and gravity

D  core temperature and surface temperature

A  the corona.

B  sunspots.

C  solar prominences.

D  solar flares.

E  granules.

A  30

B  50

C  120

D  200

E  150

A  one day

B  one week

C  three weeks

D  two weeks

E  a month

A  adaptive optics

B  active optics

C  spherical aberration

D  chromatic aberration

E  photometry

A  Infrared radiation

B  Ultraviolet light

C  Gamma-rays

D  X-rays

A  a large diameter reflecting telescope.

B  a small diameter refracting telescope.

C  a large diameter refracting telescope.

D  a small diameter reflecting telescope.

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

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

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

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  charge-coupled device.

B  spectrograph.

C  photometer.

D  core collapse device.

A  three

B  two

C  four or more

D  None of the above.

A  TRUE

B  FALSE

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

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

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

D  the sun emits more infrared radiation than ultraviolet radiation.

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

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

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

C  it has both a liquid and solid core

D  it was liquid at some point in the past

A  slow surface evolution

B  differentiation

C  flooding

D  cratering

E  fusion of hydrogen to helium

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  TRUE

B  FALSE

A  zenith

B  equinox

C  meridian

D  celestial pole

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

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

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

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

A  Earth

B  Saturn

C  Neptune

D  Jupiter

E  Mars

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

B  Planets are round.

C  Disks are common around young stars.

D  Disks are rare around young stars.

A  Earth

B  Mercury

C  Mars

D  Jupiter

E  Uranus

A  comets

B  Venus

C  asteroids

D  Saturn

E  Pluto

A  measurement of the magnetic field variations on the sea floor

B  carbon dating of rocks from mountains on the Earth

C  radioactive dating of rocks retrieved from the Moon

D  measuring the number of craters per square meter on Mercury

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 was formed by the collision of objects after the planets formed.

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

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  craters in old surfaces

B  low average density

C  orbits inside the asteroid belt

D  small diameters

E  very few satellites