Unit 1 Moon

Question 1

Diameter

Answer 1

3500km

Question 2

Distance from Earth

Answer 2

380000km

Question 3

Rotational period

Answer 3

27.3 days

Question 4

Orbital period

Answer 4

27.3 days

Question 5

Rilles

Answer 5

Fissure or narrow channel in Moon’s surface.

Question 6

Wrinkle ridges

Answer 6

A feature of Luna Maria which are low sinuous features formed by lave as it contracts.

Question 7

Lunar phase cycle

Answer 7

29.5 days

Question 8

Likely origin

Answer 8

Asteroid crashing into Earth and the debris collecting to form the moon. Big Whack.

Question 9

Maria

Answer 9

Lunar seas filled with iron rich basaltic rock.

Question 10

Terrae

Answer 10

Lunar highlands.

Question 11

ALSEP

Answer 11

Apollo Lunar Surface Experiments Package. Different experiments from Apollo 12 onwards which have been left on the lunar surface at each landing site.

Question 12

ALSEPs monitor and analyse…

Answer 12

the structure of the Moon’s interior.
the composition and pressure of the atmosphere.
the intensity of the solar wind.
minute changes in lunar gravity.
the presence of micrometeorites and secondary projectiles after impact.
lunar dust.
thermal and electrical properties of the lunar sub-surface.

Question 13

EASEP

Answer 13

Early Apollo Surface Experiments Package installed by Apollo 11.

Question 14

Evidence for the Big Whack.

Answer 14

Relative abundances of isotopes of oxygen almost identical to those on Earth.
Lack of water and other volatile substances similar to those in the Mantle.
KREEP-rich rocks. Potassium (K), Rare Earth Elements and Phosphorus.