According to Newton's Law of Universal Gravitation, if the Moon were three times further from Earth, the force by Earth on the Moon would
A) increase by a factor of 3.
B) decrease by a factor of 3.
C) increase by a factor of 9.
D) decrease by a factor of 9.
E) stay the same.
Question 2
Carbonaceous meteorites are believed to come from:
A) coal formed on Mars, then blown into space by asteroid impacts.
B) the core of a differentiated type M asteroid, now broken up.
C) the crust of a differentiated C type asteroid, now broken up.
D) a broken up cometary nucleus, dark like Comet Halley's nucleus.
E) deep space, far beyond the solar system, hence their very low density.
6-8 Earth’s Major Tectonic Plates
The Moon’s Interior and Its Effects on the Moon’s Surface
Egg Cooking Times
Earth’s Mineral Resources
Phases of the Moon
Relative expression times and amounts of cyclins during the cell cycle