Question

Choose all the answers that apply.

By what method do mountains form?
erosion
weathering
faulting
folding
magma pushing up the crust
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How are sand dunes and deltas similar?
They are both formed by erosion.
They are both formed by weathering.
They both can be prevented by contour plowing.
They both have poor quality soil not suited for farming.
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Which of the following is an example of erosion?
a river carrying dirt into a lake
a volcano erupting and releasing lava
chemicals in water dissolving minerals in rock
friction between two rock surfaces grinding away minerals
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Which of the following is the most important condition for fossilization?
minerals in water
rapid burial
presence of oil or coal
large amounts of oxygen
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Deltas _____.
form from deposited sediment
result from chemical weathering
form by volcanic eruptions
have very poor soil that cannot be used to grow crops
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Choose all the answers that apply.

Fossils can tell us about:
climate
environment
organism structure
landforms
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What happens when an oceanic and a continental plate collide?
the continental plate sinks below the oceanic plate
the oceanic plate sinks below the continental plate
mid-oceanic ridges are formed
the two plates break from the force
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Choose all the answers that apply.

Which of the following fossils are trace fossils?
amber
footprint
bone
tooth
shell

Answer 1

deltas and sand dunes form from erosion

a river carrying dirt into a lake is a example of water erosion

fossils can tell us about environments

when the oceanic and continental plate collide, the oceanic plate sinks below the continental plate

a footprint is a trace fossil

Answer 2

Answer: (1) Folding, (2) Both formed by erosion, (3)Water containing chemicals dissolves the rock minerals. (4) Rapid burial,

(5) Deposited sediment, (6) Climate & environment,

(7) Oceanic plate subducts below a continental plate,

(8) Footprints of organisms.

Step-by-step explanation:

• Mountains are formed due to the collision of two continental plates, which generates folding. For example, the Himalayas.
• Sand dunes as well as deltas are erosional features caused by the agents wind and water respectively.
• Water that are rich in chemical undergoes chemical reaction with the adjacent country rocks is an example of chemical erosion.
• In order to be a fossil, the first step is immediate burial of the dead remains and should not come in contact with Oxygen.
• Deltas are the region near the sea which are produced due to the accumulation of sediments.
• Palaeoclimatic condition and palaeo-environment can be determined from a fossil study.
• When an oceanic plate and continental plate collides, the denser oceanic plate gets subducted under less dense continental plate.
• Foot prints, mold and cast are the common trace fossils.