question

The solar day is longer than the sidereal day

answer

true

question

The seasons are caused by the processions of the earths axis

answer

false

question

The angular diameter of an object is inversely proportional to its distance from the observer

answer

true

question

A lunar eclipse can only occur during the full phase

answer

true

question

The stars in a constellation are physically close to one another.

answer

false

question

The speed of a planet orbiting the sun is independent of the planet's position in the orbit.

answer

false

question

Copernicus's theories gained widespread scientific acceptance during his lifetime

answer

false

question

During retrograde motion, planets actually stop and move backwards in space.

answer

false

question

The heliocentric model of the universe holds that Earth is at center and everything else moves around it

answer

false

question

Gaileo's observations of the sky were made with the naked eye.

answer

false

question

Imagine an emission spectrum produced by a container of hydrogen gas. Changing the amount of hydrogen in the container will change the colors of the lines in the spectrum.

answer

false

question

Two otherwise identical objects have temperatures of 1000 K and 1200 K respectively. The object at 1200 K emits roughly twice as much radiation as the object at 1000 K.

answer

true

question

The wavelength of green light is about the size of an atom.

answer

false

question

As you drive away from a radio transmitter, the radio signal you receive from the station is shifted to longer wavelengths.

answer

true

question

An electron moves to a higher energy level in an atom after absorbing a photon of a specific energy.

answer

true

question

The largest planets also have the largest densities.

answer

false

question

Asteroids, meteoroids, and comets are remnants of the early solar system.

answer

true

question

The total mass of all the planets is much less than the mass of the Sun

answer

true

question

Most comets have short periods and orbit close to the ecliptic plane.

answer

false

question

The solar system is of largely uniform composition

answer

false

question

Volcanic activity continues today on the surface of the moon.

answer

false

question

Luna maria are extensive lava-flow regions.

answer

true

question

Except for the layer of air closest to Earth's surface, the ozone layer is the warmest part of the atmosphere.

answer

true

question

Because of tidal forces, the Moon is in a synchronous orbit around Earth

answer

true

question

Motion of the crustal plates is driven by convection in Earth's upper mantle.

answer

true

question

Mars has the largest volcanoes in the solar system.

answer

true

question

Evidence of lava flows is common on the surface of Venus.

answer

true

question

There is strong circumstantial evidence that active volcanism continues on Venus.

answer

true

question

Valles Marineris is comparable in size to Earth's Grand Canyon.

answer

false

question

Numerous surface features on Venus can be seen in Earth-based images made in the ultraviolet part of the spectrum.

answer

false

question

Although often referred to as a gaseous planet, Jupiter is mostly liquid in its interior.

answer

true

question

Storms in the jovian planets' atmospheres are generally much longer lived than storms on Earth.

answer

true

question

Jupiter emits more energy than it receives from the Sun.

answer

true

question

Around northern midsummer on Uranus, an observer near the north pole would observe the Sun high and almost stationary in the sky.

answer

true

question

The solid surface of Jupiter lies just below the cloud layers that are visible from Earth.

answer

false

question

Neutrinos have never been detected experimentally.

answer

false

question

The density and temperature in the solar corona are much higher than in the photosphere.

answer

false

question

Flares are caused by magnetic disturbances in the lower atmosphere of the Sun.

answer

true

question

There are as many absorption lines in the solar spectrum as there are elements present in the Sun.

answer

false

question

Sunspots appear dark because they are hotter than the surrounding gas in the photosphere.

answer

false

question

In a spectroscopic binary, the orbital motion of the component star appears as variations in the overall apparent brightness of the system.

answer

false

question

Star A appears brighter than star B, as seen from Earth. Therefore star A must be closer to Earth than star B.

answer

false

question

The radius of a star can be determined if the star's distance and luminosity are known.

answer

false

question

A star of apparent magnitude +5 looks brighter than one of apparent magnitude +2.

answer

false

question

Astronomers can distinguish between main-sequence and giant stars by purely spectroscopic means.

answer

true

question

Twenty-one-centimeter radiation can be used to probe the interiors of molecular clouds.

answer

false

question

More massive stars form more rapidly.

answer

true

question

The formation of the first high-mass stars in a collapsing cloud tend to inhibit further star formation within the cloud.

answer

true

question

Interstellar matter is quite evenly distributed throughout the Milky Way Galaxy.

answer

false

question

All of the single red-dwarf stars that ever formed are still on the main sequence today.

answer

true

question

Because of stellar nucleosynthesis, the spectra of old stars show more heavy elements than those of young stars.

answer

false

question

The Sun will get brighter as it begins to run out of fuel in its core.

answer

true

question

It takes less and less time to fuse heavier and heavier elements inside a high-mass star.

answer

true

question

Nuclear fusion in the core of a massive star can not create elements much heavier than iron.

answer

true

question

Stars and gas in the Galactic disk move in roughly circular orbits around the Galactic center.

answer

true

question

The most likely explanation of the high-speed motion of stars and gas near the Galactic center is that they are orbiting a supermassive black hole.

answer

true

question

We can use 21-cm radiation to study molecular clouds

answer

false

question

The Galactic disk contains only old stars.

answer

false

question

Globular clusters trace out the structure of the Galactic disk.

answer

false

question

The theory of inflation predicts that the density of the universe is exactly equal to the critical density,

answer

true

question

Hubble's Law implies that the universe will expand forever.

answer

false

question

If the universe had an edge, that fact would violate the assumption of isotropy in the cosmological principle.

answer

false

question

The cosmological redshift is a direct measure of cosmic expansion.

answer

true

question

The cosmic microwave background is the highly redshifted radiation of the early Big Bang

answer

true

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