Chapter 24

Question 1

National aeronautics and space administration. (Ad

Answer 1

Stjórn

Question 2

Water is essential for sustaining life. (E)

Answer 2

Nauðsynlegur

Question 3

Water is essential for sustaining life. (S

Answer 3

Viðhalda

Question 4

And the presence of warm liquid. (P

Answer 4

Nærvera

Question 5

National aeronautics and space administration. (Ae)

Answer 5

Flugmál

Question 6

Essential for generating life. G

Answer 6

Mynda

Question 7

If plate tectonics stopped forming mountains. (P-T

Answer 7

Jarðskorpuhreyfingar

Question 8

And erosion then flattened our planet. (E

Answer 8

Veðrun

Question 9

There are two obvious sources of terrestrial water. (S

Answer 9

Uppsprettur

Question 10

There are two obvious sources of terrestrial water. (T

Answer 10

Jarð-

Question 11

Venus and Mars and he asteroid belt initially contained… (A-b

Answer 11

Smástirnu belti

Question 12

Venus and Mars and he asteroid belt initially contained… (I

Answer 12

Upphaflega

Question 13

Amounts of water retained during their formation. (R

Answer 13

Haldið eftir

Question 14

The mass of the comets in the form of ice. (C

Answer 14

Halastjarna

Question 15

So cometary impacts bring water to planetary surfaces too. (C-I

Answer 15

Halastjörnu árekstrar

Question 16

So cometary impacts bring water to planetary surfaces too. (P-S

Answer 16

Reikistjörnu yfirborð

Question 17

And ultraviolet radiation flux have split the water into hydroxyl radicals. (U

Answer 17

Útfjólublár

Question 18

And ultraviolet radiation flux have split the water into hydroxyl radicals. (F

Answer 18

Straumur, flæði

Question 19

And ultraviolet radiation flux have split the water into hydroxyl radicals. (R

Answer 19

Efnahópar

Question 20

The spacecraft was placed in a high orbit around the moon. (S

Answer 20

Geimfar

Question 21

The spacecraft was placed in a high orbit around the moon. (O

Answer 21

Sporbraut

Question 22

A neutron spectrometer on board detected slow neutrons every time the spacecraft passed over the lunar north and south poles. (N

Answer 22

Nifteind

Question 23

A neutron spectrometer on board detected slow neutrons every time the spacecraft passed over the lunar north and south poles. (Spe

Answer 23

Litrófsmælir

Question 24

A neutron spectrometer on board detected slow neutrons every time the spacecraft passed over the lunar north and south poles. (D

Answer 24

Uppgötva

Question 25

A neutron spectrometer on board detected slow neutrons every time the spacecraft passed over the lunar north and south poles. (L

Answer 25

Tungl-

Question 26

They were produced by cosmic rays bouncing off atoms. (C-r

Answer 26

Geimgeislar

Question 27

Some of the deep craters near the lunar poles are in perpetual darkness. (C

Answer 27

Gígur

Question 28

Some of the deep craters near the lunar poles are in perpetual darkness. (Pe

Answer 28

Eilífur

Question 29

Lunar prospector found tones of ice at the poles. (Pr

Answer 29

Málmleitartæki

Question 30

This might be extremely useful it ever the moon is colonized. (C

Answer 30

Nema land

Question 31

Gravitational field

Answer 31

Þyngdaraflssvið