9. Space

Front 1

The hypothesis that explains the fomation of the solar system is referred to as

Back 1

Nebular hypothesis

Front 2

When did the Big Band take place

Back 2

Approximately 13.7 billion years ago

Front 3

Why is the Sun's mass decreasing with time

Back 3

Because the sun's nuclear fusion consumes mass

Front 4

Under intense pressure and high temperature, hydrogen atoms combine to form helium. This process is called

Back 4

Nuclear fusion

Front 5

According to the nebular hypothesis, the inner planets are dense and rocky because

Back 5

The lighter gases were blown away by the Sun's radiation

Front 6

What caused dust and condensing material to accrete into planetesimals

Back 6

Gravitational attraction and collisions

Front 7

The four innter planets are

Back 7

Small, rocky, and relatively lacking in volatile elements

Front 8

Nebulae are composed primarily of which of the following elements

Back 8

Hydrogen and Helium

Front 9

Which of the following is not one of the giant outer planets

Back 9

Venus

Front 10

The giant outer planets are composed mostly of

Back 10

Hydrogen and helium

Front 11

What is the process by which an originally homogeneous Earth developed a dense core and a light crust

Back 11

Differentiation

Front 12

The heat that caused melting in the Earth's early history was supplied from which of the following events or causes?

Back 12

A large impact event and radioactivity

Front 13

Which of the following statements about the age of the Earth and Moon is true

Back 13

The Earth and Moon are approcimately the same age

Front 14

The effects of the collision of a large Mars-sized body with the Earth about 4.5Ga is proposed to have caused

Back 14

A Magma Ocean to form at the Earth's surface

An increase in the Earth's speed of rotation

The Earth's spin axis to tilt

Front 15

Which of the following planets is not geologically active

Back 15

Mercury

Front 16

The evidence that Mars once had water includes

Back 16

Dry driver beds and valleys

Front 17

Which of the following statements about Mars is false

Back 17

Mars has liquid water and a corrosive atmosphere

Front 18

Which of the following solar system bodies is least likely to have water ice on its surface

Back 18

Venus

Front 19

NASA's Deep Impact mission went to which object in our solar system

Back 19

Comet

Front 20

To date, which spacecraft/mission has given us the best close-up view of Saturn's rings

Back 20

Apollo

Front 21

What are exoplanets

Back 21

Planets that orbit another star

Front 22

The sojourner rover detected evidence for the existence of _ on Mars

Back 22

Andesite

Front 23

The asteroid belt lies between which two planets

Back 23

Mars and Jupiter

Front 24

The oldest terrestrial material found on the Earth is approximately _ old

Back 24

4.4 Billion years

Front 25

Analyses of the oldest terrestrial material found in Western Australia suggest that the Earth had cooled enough to form a crus approximately _ years after the planet was hit by a Mars-sized body.

Back 25

100 million

Front 26

Because of Mercury's proximity to the Sun, the daytime temperatures at its surface are approximately _ °C

Back 26

470

Front 27

Mercury's thin atmosphere is composed mostly of

Back 27

Helium

Front 28

Which planet is surrounded by a hot atmosphere comprised of carbon dioxide and clouds of sulfuric acid

Back 28

Venus

Front 29

Which planet is closest in size to the Earth

Back 29

Venus

Front 30

The atmosphere of Mars is comprised of

Back 30

Carbon dioxide

Front 31

The Mars exploration rovers are known as

Back 31

Opportunity and Spirit

Front 32

The time in early solar system history when there were numerous crater-forming impacts is known as the time of

Back 32

Heavy Bombardment

Front 33

The light-colored regions visible on the Moon's surface correspond to the

Back 33

Lunar highlands

Front 34

The dark regions visiible on the Moon's surface correspond to the

Back 34

Lunar maria

Front 35

What kinds of rocks are found in the lunar maria

Back 35

Basalt

Front 36

Which planet is also known as the volcanic planet

Back 36

Venus

Front 37

Because of the dense foggy atmosphere that surrounds Venus, its surface was explored using _ technology

Back 37

Radar

Front 38

Which planet had shield volcanoes

Back 38

Earth, Mars and Venus

Front 39

Venus's unique surface is thought to have formed through a process of vigorous mantle convection, volcanic activity, and crustal strechting referred to as

Back 39

Flake Tectonics

Front 40

The talest volcano in the solar system is found on

Back 40

Mars

Front 41

Mars is also called the Red Planet because of

Back 41

The abundance of iron oxide minerals on the surface gives it a red appearance

Front 42

The discovery of _ minerals on Mars indicates that there was once water present at the surface

Back 42

Sulfate

Front 43

The longest and deepest canyon in the solar system is called

Back 43

Vallis Marineris

Front 44

The effects of a small meteor impact on Earth (<100m radius) include

Back 44

Knocking over trees

Romantic Sunsets

Dusty atmosphere

Front 45

The earliest fly-by missions to Mars are referred to as the _ missions

Back 45

Mariner

Front 46

The first spacecraft to land on another planet and successfully transmit data back to Earth was called

Back 46

Viking 1

Front 47

The Mars rovers are also called the robotic geologists because they can

Back 47

Analyze minerals

Study the atmosphere

Collect samples

Front 48

How can planetary surfaces be dated

Back 48

Crater counting

Isotopic methods

Front 49

Water is present on Mars as

Back 49

Polar ice caps

Front 50

The only other planet in the solar system besides the Earth thought to be tectonically active is

Back 50

Venus

Front 51

Which of the following shows the correct order of evenets in early Earth evolution

Back 51

Accretion, impact event, differentiation

Front 52

Light from faraway galaxies can help reveal all except

Back 52

Wheter life exists in other galaxies

Front 53

The terrestrail planets are

Back 53

Mars, Venus, Earth, and Mercury

Front 54

Temperatures in the solar system generally

Back 54

Decrease away from the sun

Front 55

Which of the following is the accepted explanation of the Moon's origin

Back 55

It formed when a Mars-size object collided with Earth (collision theory)

Front 56

Which of the following statements about the solar system is correct

Back 56

Ices are more abundant outside than inside the asteroid beld

Front 57

Which of the following planets has a significant amount of oxygen in its atmosphere

Back 57

Earth

Front 58

Oceans of water currently exist on which planet

Back 58

Mercury

Front 59

Which ingredient is considered vital for the emergence of life on any given planet

Back 59

Liquid water

Front 60

Which of the following planets has the oldest overall surface

Back 60

Mercury

Front 61

Which of the following was among the effects of the "Tunguska event" in Siberia in 1908

Back 61

Birth rates among humans increased

Front 62

NASA's Viking missions went to which planet/moon

Back 62

Mars