Cosmos Compendium: Unveiling the Secrets of Our Universe

A Solar System Contains

  • Single star

At Jupiter’s Core

  • Heavy elements

Approximate Age of the Solar System

  • 4.6 billion years

A Normal White Dwarf’s Size

  • Similar to Earth

A Black Hole Is

  • An object with immense density

Astronomers Measure Magnetic Fields Using

  • Zeeman effect

According to Wien’s Law, Hotter Objects Appear

  • Bluer

Atoms That Have the Same Number of Protons but Different Numbers of Neutrons Are

  • Isotopes

A Shift in the Position of Spectral Lines Indicates

  • Motion

Average Earth to Sun Distance (AU) Was First Determined By

  • Galileo

An Observer on Earth Sees Polaris

  • Directly overhead at the North Pole

Arrange the Following Units of Distance in Order from Smallest to Largest

  • Yard, kilometer, astronomical unit, light-year

A Full Moon Occurs

  • When the moon is directly opposite the sun in the sky

A Totally Eclipsed Moon Appears

  • Only red

An Eclipse Season Occurs When

  • The sun crosses the line of nodes of the moon’s orbit

A Waxing Crescent Moon Is Visible

  • On the western horizon after sunset

An Apparent Westward Motion of a Planet Is Called

  • Retrograde motion

A Spectrograph Measures

  • Wavelength

According to Aristotle, All Matter Tends To

  • Eventually come to rest

A Comet Near the Sun May Have an Orbit That Is

  • Hyperbolic

An Orbit Is Called Geosynchronous When

  • It matches the Earth’s rotation

Belt and Zone Circulation Characterizes

  • All Jovian planets

Comparing and Contrasting the Properties of Planets Is Called

  • Comparative planetology

Comets Are Composed Primarily of

  • Ice and dust

Consider the Complete Fusion of 4 Hydrogen Nuclei into Helium. The Mass Lost Is

  • 22 y

Due to the Temperatures of Uranus and Neptune, Their Clouds Are Composed of

  • Liquid methane

During Which Stage of Planet Formation Do Planetesimals Begin to Grow?

  • Flooding

Europa Has Few Craters Because

  • Its surface has erased them

Earth Doesn’t Experience a Solar Eclipse Every Month Because

  • The moon’s orbit is tilted

Einstein Revolutionized Newtonian Physics By

  • Providing a new description of gravity

Galileo Determined That Falling Bodies Experience

  • Constant acceleration

How Is It That Earth Has So Few Impact Craters Compared to Other Celestial Bodies?

  • Earth has absorbed them

How Often Does Venus Rotate?

  • 243 Earth days

How Have Scientists Been Able to Map the Surface of Venus?

  • Radar imaging

How Is Radioactive Decay Used to Determine the Age of an Object?

  • Both of the amounts

In Saturn’s Rings, the Gaps Are Caused By

  • Cassini’s division

If a Star Is Found Directly Above the Sun on the H-R Diagram, It Must Be

  • Closest to the star

In Comparing Terrestrial Planets, Which Planet Has a Dense, Hot, Carbon Dioxide Atmosphere?

  • Venus

If a Continuous Spectrum Passes Through a Cool Gas, We See

  • A dark absorption spectrum

If the Plane of Earth’s Equator Were Not Inclined to Its Orbit

  • All locations on Earth would experience the same amount of daylight

In the Milankovitch Theory, What Explains the Climate Changes That Can Lead to Ice Ages?

  • Ice ages

Kepler Used Tycho’s Observations to Show That Planets Moved in

  • Elliptical orbits

Mutual Gravitation Is

  • Property of all matter

Numerous Meteorites Found in Antarctica Originated From

  • Jupiter

Newton’s Law of Gravitation States That the Force Between Two Objects Is Proportional to

  • Force between

Of the Following Parts of the Sun, Which Is the Hottest?

  • Corona

One of the First Tests of General Relativity Was

  • Determination of rate

Planetesimals Beyond the Orbit of _____ Could Accrete Ices as Well as Rock and Metal.

  • Mars, Jupiter

Perigee Is the Point in an Orbit That Is

  • Orbit closest to Earth

Parallax Is

  • Apparent motion

Precession of Earth’s Axis Takes About

  • 26,000 years

Saturn’s Rings Are Composed of

  • A, B, and C rings

Shield Volcanoes Are Formed

  • Over hot spots

Since Mars’s Axis of Rotation Is Inclined Similar to Earth’s

  • Seasons

Studies Have Shown That Venus’s Surface Temperature Is So High Because of

  • CO2

Some Narrow Rings Are Associated with

  • Small shepherd moons

Since There Are No Plate Boundaries on Mars

  • Plate tectonics don’t exist

Scientific Model Is

  • True

Spring Tides Occur During

  • New moon, full moon

The Saros Cycle

  • All

The Bluer the Light, the

  • More energy

The Diagram Below Represents the _____ Model of the Universe.

  • Ptolemy

The Moon Has No Atmosphere Because

  • The moon contains little

The Daytime Surface Temperature of Mercury Is High Because

  • Mercury is closer

Though Titan Has a Cold Surface Temperature, It May Have Liquid Water Because

  • Very cold

The Star Betelgeuse Is Red Because

  • The surface is hotter

The Collision of Two Continental Plates Produces

  • Folded mountain

The Inner Planets Are Primarily Composed of

  • Rock and metal

The Neutral Hydrogen Atom Consists of

  • One proton and one electron

The Fresh, Newly Formed Craters on the Moon

  • Appear very

The Time It Takes a Planet to Return to the Same Location in the Sky, Relative to the Sun, Is Called

  • Two revolutions

The Type of Elements That a Star Contains Can Be Determined By Studying Its

  • Wavelengths

The Particle That Carries the Electromagnetic Force Is the

  • Electron

The Sun Is Composed of

  • All

The Force Due to Gravity Is Proportional to

  • Mass

Tycho Failed to Observe Stellar

  • Parallax; beyond

The Nice Model Explains

  • Migration

The Apparent Brightness of a Star Is Referred to As Its

  • Intensity

The Corona Can Reach Temperatures of

  • 2,000,000K

The Formation of the Red Sea Is an Example of

  • Rift valley

The Time for a Planet to Return to the Same Elongation Is Called Its

  • Synodic period

The Orbit of the Planet Is

  • Nothing

The _____ of an Object Is a Measure of the Amount of Matter It Contains.

  • Mass

Which Sequence Is Correct When Ordered by Increasing Size?

  • Earth, solar

Which of the Following Is True of All Stars?

  • Every star

What Is So Unique About the Keck Telescope?

  • Segmented

Which of the Following Causes Seasons on Earth?

  • The tilt

Which of the Following Is True of Planetary Orbits?

  • Larger the orbit

Which Telescope Is Designed to Study the Earliest Galaxies?

  • JWST

Why Did Galileo’s Observations of the Moons of Jupiter Contradict the Geocentric Model?

  • Moons did not orbit Earth

What Characteristic of a Star Determines Its Location on the Main Sequence?

  • Diameter

What Is a Major Advantage of Placing Telescopes in Space?

  • Non-turbulent

Which Type of Electromagnetic Radiation Has the Shortest Wavelength?

  • Gamma

Why Are X-Rays and Gamma Rays Dangerous to Living Things?

  • Photons

What Are the Smallest Interplanetary Bodies?

  • Meteors

What Was the Key Factor in the Differentiation of the Original Earth?

  • Temperature

What Is the Dominant Feature on the Surface of Mercury?

  • Craters

What Does *Maria* Mean?

  • Seas

What Characteristic Is Not Shared by All Terrestrial Planets?

  • Dense metallic

What Makes Up the Dark-Colored Areas of the Moon?

  • Basalt

What Is a Unique Feature on Mercury?

  • Lobate scarps

Which of the Following Is the Oldest Surface on the Moon?

  • Highlands

What May Have Caused Mercury to Shrink?

  • Large impact

What Method Was Used to Determine the Age of the Lunar Rocks?

  • Radioactive dating

What Solid Evidence Do We Have That Water Once Existed on Mars?

  • Sedimentary rock samples

What Is the Largest Impact Crater on Mercury?

  • Caloris basin

What Is the Process in Which Denser Materials Sink Toward the Center of a Planet?

  • Differentiation

What Part of the Sun Is Responsible for Solar Flares?

  • Expansion

What Positive Effect Does Volcanic Activity Have on a Planet’s Atmosphere?

  • Chemical

What Is a Characteristic of Terrestrial Planets?

  • Rocky surface

What Is the Correct Order of Events in the Formation of a Terrestrial Planet?

  • Differentiation, cratering

Which of the Following Doppler Shifts Indicates the Fastest-Moving Star?

  • 1,111

What Causes Granulation on the Sun’s Surface?

  • Convection

What Is Significant About Olympus Mons on Mars?

  • It is the largest in solar

What Keeps the Surface of Venus So Hot?

  • Thick atmosphere high

Why Are There No Small Impact Craters on Venus?

  • Thick atmosphere

Why Is Venus’s Atmosphere So Hot?

  • 96% CO2

Which Best Describes the Surface of Europa?

  • Dark and dirty ice

Which of Saturn’s Moons May Have Liquid Water Underneath Its Surface?

  • Enceladus

Which of the Jovian Planets Has the Great Dark Spot?

  • Jupiter

Which Statement Best Describes the Surface of Callisto?

  • Old and dark

Which Statement Best Describes the Surface of Io?

  • Covered in active

Which Statement About Saturn Is True?

  • Float

What Is the Composition of Jupiter?

  • Mostly hydrogen

What Action Is Responsible for the Formation of Rain?

  • Falling droplets

Why Does the Temperature of a Gas Rise When It Is Compressed?

  • Atoms within

Why Was the Davis Experiment So Important?

  • The neutrinos distributed

What Is the Approximate Surface Temperature of the Sun?

  • 5800K

What Are the Dark Regions Seen on the Sun’s Surface?

  • Granules

Which Is the Correct Order of the Sun’s Layers, From the Inside Out?

  • Photosphere, chromosphere

What Does Molten Rock That Flows Onto the Surface of a Planet Called?

  • Basalt

Which of the Terrestrial Planets Is Considered a Water World?

  • Earth

Why Is the Very Center of Earth Solid?

  • The pressure

What Theory Explains the Apparent Movement of the Continents Over Time?

  • Continental drift

What Causes Earth’s Magnetic Field?

  • The strong magnetic

Which List Below Ranks the Objects From Smallest to Largest?

  • Jsun

When Was the Last Time Humans Walked on the Moon?

  • 1972

What Evidence Would You Look for to Determine If a Planet Had Active Volcanoes?

  • You would look

What Is Responsible for the Blue Color of Uranus and Neptune?

  • Water

Which Two Elements Make Up the Majority of the Sun’s Mass?

  • Hydrogen and helium

Which of the Following Is an Atom That Has Lost or Gained One or More Electrons?

  • Ion

Which Is the Correct Order of Formation of a Planetary System?

  • Planetesimals, protoplanets

Which Statement Best Describes Inertia?

  • Object w no force on acting

Which Form of Electromagnetic Radiation Has the Longest Wavelength?

  • Radio

You Are Standing Still and Hear a Siren Coming Toward You. Compared to the Siren at Rest, the Sound You Hear Is

  • Higher in pitch