Earth/Space Science Test 3

Which of the following EM radiation has the highest frequency and energy?

• X-rays

• Infrared

• Visible light

• Microwaves

How do stars form?

• Stars form directly from black holes as they are created from supernovae.

• Stars formed as gravity split off from the combined force just after the Big Bang.

• Stars formed as soon as hydrogen atoms began being mass-produced about 380,000 years after the Big Bang.

• Stars form as the dust and gas of the Universe are drawn in and condensed by gravity to smaller and smaller areas.

Clouds of gases and dust that absorb ionizing ultraviolet radiation from nearby hot stars or star remnants and reemit it as visible light are called:

• bright reflection nebulae.

• bright emission nebulae.

• supernova remnants.

• dark nebulae.

• neutron stars.

Identify this object.

• a white dwarf star

• the planet Jupiter

• the Eskimo nebula

• the Pillars of Creation in the Eagle Nebula

The Crab Nebula is actually:

• a planetary nebula.

• a white dwarf star.

• a red supergiant star.

• a supernova remnant.

Which of the following is classified as a dark nebula?

• 
• 
• 
• 

Astronomers use the term _____________________ to describe how bright a star appears from Earth.

• apparent magnitude

• radiometry

• luminance

• Doppler Shift

When the core of a middle-sized star shrinks and the outer layers of the star are expelled into space, which of the following are formed? CHOOSE ALL THAT APPLY!

• a planetary nebula

• a black hole

• a neutron star

• a white dwarf star

Nearly all of Earth's energy needs are met by:

• wind power.

• the Sun.

• oil and water.

• gamma rays.

Which of the following is the "engine" for stars?

• gravity

• chemical combustion

• thermonuclear fusion

• electromagnetism