Question

1) identify the processes that shape planetary surfaces and identify the most common planetary process

2) identify the processes that have taken place on the surface of Mars and Venus.

3) identify the surface processes that have taken place on the surface of Mercury the Moon and the moon's of Jupiter.

Answer 1

(1) Identify the processes that shape planetary surfaces and identify the most common planetary process

Four processes that shape planetary surfaces which are given below as :

(a) Impact cratering = An excavation of bowl-shaped craters when asteroids or comets or small meteorites hit a planet’s surface.

(b) Volcanism = An eruption of molten rock (lava) from planet’s interior onto its surface.

(c) Tectonics = Disruption of planet’s surface by an internal stresses.

(d) Erosion = Wearing down or building up of geological features by wind, water, ice or other weather effects

(2) Identify the processes that have taken place on the surface of Mars and Venus.

Venus has an extensive atmosphere and is completely covered with clouds. We now know that Venus is an amazing place with abundant volcanoes that are probably active, complex tectonic features, and relatively young terranes with few impact craters.

The following processes that have taken place on the surface of Mars and Venus are given below as :

(a) Stress corrosion cracking = They involving the propagation of fractures assisted by chemically reactive fluids and influencing formation of fractures on a broad range of scales from microscopic cracks on mineral surfaces through to larger scale vertical joints.

(b) Spheroidal weathering = It results from chemical weathering where fluids percolate along pre-existing joint bounded fractures leading to corestones within soils.

(c) Frost shattering = It resulting from growth of ice crystals in fractures fed by thin films of fluid that have significantly depressed freezing temperatures.

(d) Salt weathering = It resulting from crystallization of dissolved salts within rock fractures and is a similar process to frost shattering.

(e) Insolation weathering = It resulting from thermal stresses generated from diurnal temperature changes.