Exam 2

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

B  planets move in elliptical orbits around the sun.

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

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

A  high temperature and low density

B  high temperature and high density

C  low temperature and low density

D  low temperature and high density

A  prominences

B  solar wind

C  spicules

D  flares

E  supergranules

A  repel, negative

B  attract, positive

C  attract, negative

D  repel, positive

A  nuclear fission

B  nuclear fusion

C  nuclear splitting

D  nuclear recombination

A  corona.

B  core.

C  chromosphere.

D  photosphere.

A  radiation and heat

B  core temperature and surface temperature

C  pressure and gravity

D  heat and rotation

A  sunspots.

B  solar prominences.

C  the corona.

D  granules.

E  solar flares.

A  150

B  200

C  120

D  50

E  30

A  one day

B  one week

C  two weeks

D  three weeks

E  a month

A  chromatic aberration

B  adaptive optics

C  active optics

D  photometry

E  spherical aberration

A  Infrared radiation

B  Ultraviolet light

C  Gamma-rays

D  X-rays

A  a large diameter refracting telescope.

B  a small diameter refracting telescope.

C  a small diameter reflecting telescope.

D  a large diameter reflecting telescope.

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

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

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

A  spectrograph.

B  photometer.

C  core collapse device.

D  charge-coupled device.

A  four or more

B  two

C  three

D  None of the above.

A  TRUE

B  FALSE

A  the sun emits more infrared radiation than ultraviolet radiation.

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

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

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

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

A  it has both a liquid and solid core

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

C  it was liquid at some point in the past

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

A  cratering

B  flooding

C  slow surface evolution

D  fusion of hydrogen to helium

E  differentiation

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

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

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

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

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

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

A  Jupiter

B  Mars

C  Neptune

D  Saturn

E  Earth

A  Disks are common around young stars.

B  Disks are rare around young stars.

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

D  Planets are round.

A  Mars

B  Jupiter

C  Mercury

D  Uranus

E  Earth

A  Saturn

B  Venus

C  Pluto

D  asteroids

E  comets

A  radioactive dating of rocks retrieved from the Moon

B  measuring the number of craters per square meter on Mercury

C  carbon dating of rocks from mountains on the Earth

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  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  craters in old surfaces

B  very few satellites

C  orbits inside the asteroid belt

D  low average density

E  small diameters