1. The Moon

2. Albedo of the Moon 7% opposed to Earth’s 31%
Sun-side temperatures can reach 127ᵒC
Dark-side temperatures can reach -173ᵒC

4. Highlands and Maria
Highlands are heavily cratered regions of the Moon that are light in colour and mountainous.
Maria are smooth plains that appear dark (analogous to ocean/water reservoirs)

5. Craters
Ejecta: Material that is blasted out during impacts that eventually fall back to the surface
Rays: Long lines of ejecta that radiate outward from an impact site.
Rilles: meandering (curving), valley like structures that might be collapsed lava tubes

8. Is the Moon geologically active?

9. Composition Made up of silicates (Si & O compounds)
Highlands are made of lunar breccias (made of plagioclase feldspar)
Maria are predominantly basalt (but with no water)
Regolith
Means ‘blanket rock’
A layer of loose rock covering solid rock

11. Seismic Activity on the Moon
The Moon experiences quakes occur due to:
Tidal dynamics under the surface
Meteorite Impacts
Thermal contraction / expansion
Shallow moon quakes
Moonquakes tend to persist for a long time because there is no water to dampen the process.

12. Seismic Activity on the Moon
From , various Apollo missions placed 4 seismometers on the Moon that remained active until 1977
3000 meteorite impacts, 1700 meteoroid strikes, and 9 deliberate spacecraft crashes were recorded
This lead to the mapping of the Moon’s interior.

15. Formation Theory
Impact Theory

16. Formation Theory
Fission Theory

17. Formation Theory
Capture Theory

18. Visiting the Moon

19. Try This
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