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  low temperature and low density

B  low temperature and high density

C  high temperature and low density

D  high temperature and high density

A  flares

B  spicules

C  supergranules

D  prominences

E  solar wind

A  repel, negative

B  attract, positive

C  repel, positive

D  attract, negative

A  nuclear recombination

B  nuclear splitting

C  nuclear fission

D  nuclear fusion

A  core.

B  photosphere.

C  corona.

D  chromosphere.

A  core temperature and surface temperature

B  radiation and heat

C  heat and rotation

D  pressure and gravity

A  sunspots.

B  granules.

C  the corona.

D  solar prominences.

E  solar flares.

A  30

B  150

C  120

D  200

E  50

A  two weeks

B  a month

C  three weeks

D  one week

E  one day

A  spherical aberration

B  chromatic aberration

C  active optics

D  adaptive optics

E  photometry

A  Ultraviolet light

B  X-rays

C  Infrared radiation

D  Gamma-rays

A  a small diameter refracting telescope.

B  a large diameter refracting telescope.

C  a large diameter reflecting telescope.

D  a small diameter reflecting telescope.

A  Gamma rays would have a lower frequency and travel the same speed as 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 shorter wavelength and a lower energy than radio waves.

A  charge-coupled device.

B  core collapse device.

C  photometer.

D  spectrograph.

A  four or more

B  three

C  two

D  None of the above.

A  TRUE

B  FALSE

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

B  the sun emits more infrared radiation than ultraviolet radiation.

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

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

E  carbon dioxide is transparent to visible light and opaque to infrared 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 was liquid at some point in the past

D  it has both a liquid and solid core

A  slow surface evolution

B  differentiation

C  fusion of hydrogen to helium

D  cratering

E  flooding

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  TRUE

B  FALSE

A  meridian

B  zenith

C  celestial pole

D  equinox

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

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

A  Earth

B  Saturn

C  Mars

D  Jupiter

E  Neptune

A  Planets are round.

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

C  Disks are rare around young stars.

D  Disks are common around young stars.

A  Mars

B  Mercury

C  Uranus

D  Earth

E  Jupiter

A  comets

B  Pluto

C  asteroids

D  Venus

E  Saturn

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 meteorites.

C  samples of lunar rocks.

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

D  All of the above.

A  very few satellites

B  small diameters

C  low average density

D  orbits inside the asteroid belt

E  craters in old surfaces