WorksheetsEH Investigation 2&3: Weathering, Erosion and Deposition
Total questions: 27
Worksheet time: 27mins
Which sediments would I find at area X?
Cobbles and pebbles because they are bigger and heavier than sand
Rocks like sand and gravel because they are bigger and heavier than clay
Finer particles like clay and silt because they are smaller and lighter than sand
Rocks like sand and gravel because they are smaller and lighter than clay
Which sediments would I find at area Y?
Cobbles and pebbles because they are bigger and heavier than sand
Rocks like sand and gravel because they are bigger and heavier than clay
Finer particles like clay and silt because they are smaller and lighter than sand
Rocks like sand and gravel because they are smaller and lighter than clay
Which sediments would I find at area Z?
Cobbles and pebbles because they are bigger and heavier than sand
Rocks like sand and gravel because they are bigger and heavier than clay
Finer particles like clay and silt because they are smaller and lighter than sand
Rocks like sand and gravel because they are smaller and lighter than clay
Which explanation best describes how a boulder can turn into silt as it moves down a river?
Water washes over the boulder until it is silt-sized.
The boulder hits other rocks or objects and breaks apart.
The boulder moves down the river until it lands in a basin and becomes silt.
A chemical reaction turns the boulder into silt.
You find some soil that is mostly made of clay and silt, but no sand. How might this soil have formed?
Slow-moving water carried the sand downstream and left behind the silt and clay
Wind blew all the sand away, leaving behind the silt and clay particles
Silt, clay, and organic material settled out of slow-moving water
A fast-moving stream washed away all the sand.
You find a layer of shale rock. What environment might have been here before?
A sandy beach
A swamp
A coral reef
A river
You find a layer of sandstone rock. What environment might have been here before?
A sandy beach
A swamp
A coral reef
A river
You find a layer of limestone rock. What environment might have been here before?
A sandy beach
A swamp
A coral reef
A river
Two students are exploring a creek in their neighborhood. Continuing along the creek, they and some pieces of white sandy rock in the creek. They drip hydrochloric acid on that rock. The rock does not fizz. Choose the 3 processes that likely formed the rocks in the creek.
Deposition
Chemical reaction
Cementation
Erosion
Melting
Which statement best describes the principle of uniformitarianism?
Deposition occurs faster today than it did in ancient environments
Weathering and erosion can be fast or slow, depending on the type of rock.
Earth’s geological features were formed by a few catastrophic events
Rocks form by the same processes today as in the past
Some students wanted to investigate how five different sediments settled in a basin of water. They started with the basin flat on the table and added new sediments each day for three days. On the fourth day, they gently tilted the basin before adding the sediments for the last few days. (Note: The layer shaded gray represents the water.) Which drawing best represents the basin layers and water at the end of their investigation? (Mark the one best answer.)
A
B
C
D
How does the basin investigation apply to the formation of rock layers in the real world? Choose the best 3 options that explain how this investigation applies to the formation of rock layers.
An entire basin can become tilted.
Layers always form horizontally
Layers gradually tilt until they become horizontal
Newer layers form on top of older layers.
Larger sediments are found in the bottom layers.
Abrasion, or wind blowing tiny grains of sand against a rock to wear it away, is part of which process?
Physical weathering
Biological weathering
Wind erosion
Water erosion
Abrasion, or wind blowing tiny grains of sand against a rock to wear it away, is part of which process?
Physical weathering
Biological weathering
Ice erosion
Water erosion
Abrasion, or wind blowing tiny grains of sand against a rock to wear it away, is part of which process?
Physical weathering
Chemical weathering
Biological Weathering
Water erosion
Plant roots can grow in the cracks of rocks and split the rocks apart. What process is this?
Physical weathering
Chemical weathering
Biological Weathering
Water erosion
Erosion can be done in three ways. What are they? Mark all three.
Plant roots
Wind
Sand
Water
Ice
How are weathering and erosion DIFFERENT?
Weathering takes it and erosion breaks it
Weathering breaks it and erosion takes it
Weathering drops sediments off and erosion makes them smaller
Weathering moves sediments and erosion drops them into basins
What is the SMALLEST sediment size that a rock can be weathered down into?
Silt
Sand
Clay
Pebbles
How is sandstone formed?
Compacted areas of silt and clay mixed with cement like groundwater or clay
Compacted areas of pure sand mixed with cement like groundwater
Compacted areas of sediment with precipitate of calcium carbonate cements the sediments together
How is shale formed?
Compacted areas of silt and clay mixed with cement like groundwater or clay
Compacted areas of pure sand mixed with cement like groundwater
Compacted areas of sediment with precipitate of calcium carbonate cements the sediments together
How is limestone formed?
Compacted areas of silt and clay mixed with cement like groundwater or clay
Compacted areas of pure sand mixed with cement like groundwater
Compacted areas of sediment with precipitate of calcium carbonate cements the sediments together
What is compaction when it comes to the formation of rocks?
When sediments are glued together with a cement
When sediments get broken down and moved from one place to another
When sediments are dropped into a basin and sorted by size
When sediments get packed down due to gravity or the weight of the sediments being deposited on top
How do fossils get into limestone? Choose the best 2 answers.
Land animals died and washed into the water
Sea organisms died and fell to the bottom
Animal lived on the sea floor or their shells fell to the bottom
There are no fossils in limestone.
What is the chemical reaction that happens with limestone or lime water?
When carbon dioxide is added, the acid is released from the limestone/water.
When calcium carbonate is added, the carbon dioxide is released from the limestone/water.
When acid is added, the carbon dioxide is released from the limestone/water.
When calcium and carbon dioxide mix, it releases calcium carbonate from the limestone/water.
What does the principle of superposition explain?
The rock layer on the bottom is the oldest and the top is the youngest
The rock layer on the bottom is the oldest and the top is the youngest
All rock layers are formed horizontally (straight across) on top of the layer below
Rocks form by the same processes today as in the past
What does the principle of original horizontality explain?
The rock layer on the bottom is the oldest and the top is the youngest
The rock layer on the bottom is the oldest and the top is the youngest
All rock layers are formed horizontally (straight across) on top of the layer below
Rocks form by the same processes today as in the past
