Exam 2

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

A  low temperature and low density

B  high temperature and high density

C  high temperature and low density

D  low temperature and high density

A  solar wind

B  flares

C  prominences

D  supergranules

E  spicules

A  repel, positive

B  attract, positive

C  repel, negative

D  attract, negative

A  nuclear recombination

B  nuclear splitting

C  nuclear fusion

D  nuclear fission

A  corona.

B  photosphere.

C  core.

D  chromosphere.

A  heat and rotation

B  core temperature and surface temperature

C  pressure and gravity

D  radiation and heat

A  solar flares.

B  sunspots.

C  granules.

D  solar prominences.

E  the corona.

A  120

B  50

C  30

D  150

E  200

A  one week

B  one day

C  three weeks

D  a month

E  two weeks

A  adaptive optics

B  chromatic aberration

C  photometry

D  spherical aberration

E  active optics

A  Gamma-rays

B  X-rays

C  Ultraviolet light

D  Infrared radiation

A  a large diameter refracting telescope.

B  a small diameter refracting telescope.

C  a large diameter reflecting telescope.

D  a small diameter reflecting telescope.

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

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

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

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

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

A  photometer.

B  charge-coupled device.

C  core collapse device.

D  spectrograph.

A  two

B  four or more

C  three

D  None of the above.

A  TRUE

B  FALSE

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

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

C  the sun emits more infrared radiation than 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 was liquid at some point in the past

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

D  it has both a liquid and solid core

A  cratering

B  flooding

C  differentiation

D  fusion of hydrogen to helium

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  meridian

B  celestial pole

C  zenith

D  equinox

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

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

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

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

A  Earth

B  Mars

C  Jupiter

D  Neptune

E  Saturn

A  Disks are rare around young stars.

B  Planets are round.

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

D  Disks are common around young stars.

A  Jupiter

B  Mars

C  Mercury

D  Earth

E  Uranus

A  asteroids

B  Venus

C  Saturn

D  Pluto

E  comets

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 lunar rocks.

B  samples of meteorites.

C  samples of earth 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  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  orbits inside the asteroid belt

B  low average density

C  small diameters

D  craters in old surfaces

E  very few satellites