Exam 2

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

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

C  planets move in elliptical orbits around the sun.

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

A  low temperature and high density

B  high temperature and low density

C  low temperature and low density

D  high temperature and high density

A  solar wind

B  flares

C  supergranules

D  prominences

E  spicules

A  attract, negative

B  attract, positive

C  repel, negative

D  repel, positive

A  nuclear splitting

B  nuclear recombination

C  nuclear fusion

D  nuclear fission

A  chromosphere.

B  photosphere.

C  corona.

D  core.

A  heat and rotation

B  radiation and heat

C  core temperature and surface temperature

D  pressure and gravity

A  solar prominences.

B  the corona.

C  solar flares.

D  sunspots.

E  granules.

A  30

B  200

C  120

D  50

E  150

A  a month

B  one week

C  two weeks

D  one day

E  three weeks

A  chromatic aberration

B  adaptive optics

C  spherical aberration

D  photometry

E  active optics

A  Infrared radiation

B  Ultraviolet light

C  X-rays

D  Gamma-rays

A  a large diameter reflecting telescope.

B  a small diameter refracting telescope.

C  a small diameter reflecting telescope.

D  a large diameter refracting telescope.

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

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

C  Radio waves would have a longer wavelength and travel the same speed as 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  charge-coupled device.

B  photometer.

C  spectrograph.

D  core collapse device.

A  two

B  four or more

C  three

D  None of the above.

A  FALSE

B  TRUE

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

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

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

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

E  the sun emits more infrared radiation than ultraviolet radiation.

A  it was liquid at some point in the past

B  it has both a liquid and solid core

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

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

A  differentiation

B  slow surface evolution

C  flooding

D  fusion of hydrogen to helium

E  cratering

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

B  it has both a liquid and solid core

C  it was liquid at some point in the past

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

A  FALSE

B  TRUE

A  equinox

B  zenith

C  meridian

D  celestial pole

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

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  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  Neptune

C  Saturn

D  Mars

E  Jupiter

A  Disks are common around young stars.

B  Planets are round.

C  Disks are rare around young stars.

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

A  Uranus

B  Earth

C  Mars

D  Jupiter

E  Mercury

A  Pluto

B  Venus

C  comets

D  asteroids

E  Saturn

A  measurement of the magnetic field variations on the sea floor

B  measuring the number of craters per square meter on Mercury

C  radioactive dating of rocks retrieved from the Moon

D  carbon dating of rocks from mountains on the Earth

A  samples of meteorites.

B  samples of earth rocks.

C  samples of lunar rocks.

D  none of the above

E  all of the above

A  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

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

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

D  All of the above.

A  small diameters

B  low average density

C  very few satellites

D  craters in old surfaces

E  orbits inside the asteroid belt