BIRTH OF THE SUN AND PLANET

Question 1

MASSIVE CLOUD OF DUST AND GAS KNOWN AS

Answer 1

SOLAR NEBULA

Question 2

THE SUN CONSUMED MORE THAN _% OF THE MATTER IN THE NEBULA, LEAVING BEHIND A SWIRLING DISK OF GAS AND DUST

Answer 2

99%

Question 3

THIS MATERIAL CLUMPED TOGETHER THROUGH A PROCESS CALLED _

Answer 3

ACCRETION

Question 4

THESE CLUMPS EVENTUALLY GAINED ENOUGH MASS TO EXERT THEIR OWN _

Answer 4

GRAVITATIONAL PULL

Question 5

ONE OF THE TERRESTRIAL PLANETS WAS INITIALLY A MOLTEN BALL OF ROCK

Answer 5

EARTH

Question 6

TWO THEORIES ON THE ORIGIN OF EARTH’S WATER:

Answer 6

WATER FROM SPACE AND WATER FROM EARTH’S INTERIOR

Question 7

THEORY THAT WATER DELIVERED TO EARTH FROM OTHER SOLAR SYSTEM THROUGH COMETS AND ASTEROID

Answer 7

WATER FROM SPACE

Question 8

THEORY THAT EAT MAY HAVE FORMED WITH WATER ALREADY PRESENT WITHIN ITS INTERIOR

Answer 8

WATER FROM EARTH’S INTERIOR

Question 9

MARTIAN TERRAIN IS ALSO KNOWN AS

Answer 9

RECURRING SLOPE LINEAE (REL)

Question 10

DISCOVERED THAT THERE’S WATER ON MARS

Answer 10

1971 MARINER 9 SPACECRAFT