Astronomy Quiz
16 questions · no time limit
0:00
THE SOLAR SYSTEM
Question 1 of 16
No time limit
Current
Answered
Flagged
Not seen
The transition from gentle sticking of dust grains via electrostatic forces to gravity-dominated accretion of planetesimals is a key step in planet formation. At roughly what size does an object's self-gravity begin to significantly enhance its growth rate by gravitationally focusing other nearby particles?
YOUR PROGRESS
16
QUESTIONS
Ready when you are
Answer in any order. Your progress shows here as you go.
QUESTIONS
KEYBOARD
Pick an answer ABCD
Next question ↵→
Previous ←
Flag for review F
Answers save as you go · flagged questions come back at the end