Question 29 (1 point)

Question

Alfred Wegner's Continential Drift Theory was very widely accepted at the time he proposed it.What is Continental Drift? - WorldAtlas

True; the simple observation of the world map as a jigsaw puzzle was evidential proof.
False; scientists rejected the theory because it did not explain how the continents moved.

Question 30 (1 point)
According to the Theory of Plate Tectonics, why are the plates moving (and therefore the oceanic and continental crust as well) ?
a
The tectonic plates upon which the continents sit are blown by the global winds across the atmosphere.
b
The tectonic plates upon which the continents sit are floating around on the semi-liquid asthenosphere of the mantle.
c
The tectonic plates upon which the continents sit are being pushed around by the weathering forces that affect the lithosphere.
d
The tectonic plates upon which the continents sit are being moved by conservation of momentum as animals walk across the surface.

Question 31 (1 point)
How are Mountains on land, like the Himalayas. created by plate motion?

a
Two plates diverge, thus creating an open tunnel to the liquid mantle on the surface, the upwelling of the liquid rock creating the mountain ranges
b
Two plates of different density converge, causing large volcanic activity which throws liquid rock materials into the air, that will fall down and collect and harden to create the mountains
c
Two plates of almost equal density converge and, instead of subducting under one another, they uplift into a mountain.
d
Two plates of almost equal density slip past/transform one another, creating seismic waves that tear the ground up and create the mountain ranges

Question 32 (1 point)
The following rock form pictured below was most likely produced by which weathering effect? Analyze the evidence in the picture.

a
Hydrolysis
b
Seismic activity
c
Frost wedging
d
Abrasion by wind

Answer 1

Here are the answers for your questions:

Question 29:
False; scientists rejected the theory because it did not explain how the continents moved.

Question 30:
b. The tectonic plates upon which the continents sit are floating around on the semi-liquid asthenosphere of the mantle.

Question 31:
c. Two plates of almost equal density converge and, instead of subducting under one another, they uplift into a mountain.

Question 32:
Without seeing the picture, I can't determine the answer accurately. However, if you provide a description or context about the rock formation, I can help you deduce the most likely weathering effect. Based on common knowledge:

• Hydrolysis typically involves chemical reactions with water.
• Seismic activity relates to the movement of earth caused by tectonic forces.
• Frost wedging is about water freezing and expanding in rock cracks.
• Abrasion by wind involves erosion caused by wind-worn particles.

Please provide more details about the rock form for a more precise answer for Question 32.