earth b Grade A Q&A
In the diagram, above, marker A is pointing to a __________, which is formed by water
eroding away soft rock around harder rock, creating a steep drop-off. - (correct
answer)c.
waterfall
In the diagram, above, marker F is pointing to a __________, which are formed when
meanders wear away at a narrow point and a pool of water forms. - (correct answer)b.
oxbow lake
In the diagram, above, marker B is pointing to a __________, which is a small stream or
river that runs into a larger stream or river. - (correct answer)a.
tributary
What five factors determine the amount of runoff in an area? - (correct answer)The five
main factors that determine the amount of runoff in an area are the amount of rain,
vegetation, type of soil, shape of the land, and how people use the land.
Compare and contrast the features of a river near its source and far down along its
course. - (correct answer)Near its source, a river is fast moving and flows on a steep
mountain slope. It rapidly erodes a V-shaped, steep-sided valley. Its course may include
waterfalls and rapids. Farther along its course, a river flows over gently sloping land.
Here it flows more slowly, spreading out and eroding the land to form a wide, flat valley.
As the river begins to wind from side to side, meanders form.
In the diagram, above, marker D is pointing to a __________, which is a landform that
forms when a river slows down as it flows into an ocean or lake. As the river slows, it
drops its sediment load, gradually creating a network of small channels and islands. -
(correct answer)d.
delta
In the diagram, above, marker A is pointing to a __________, which is formed by water
eroding away soft rock around harder rock, creating a steep drop-off. - (correct
answer)c.
waterfall
In the diagram, above, marker F is pointing to a __________, which are formed when
meanders wear away at a narrow point and a pool of water forms. - (correct answer)b.
oxbow lake
In the diagram, above, marker B is pointing to a __________, which is a small stream or
river that runs into a larger stream or river. - (correct answer)a.
tributary
What five factors determine the amount of runoff in an area? - (correct answer)The five
main factors that determine the amount of runoff in an area are the amount of rain,
vegetation, type of soil, shape of the land, and how people use the land.
Compare and contrast the features of a river near its source and far down along its
course. - (correct answer)Near its source, a river is fast moving and flows on a steep
mountain slope. It rapidly erodes a V-shaped, steep-sided valley. Its course may include
waterfalls and rapids. Farther along its course, a river flows over gently sloping land.
Here it flows more slowly, spreading out and eroding the land to form a wide, flat valley.
As the river begins to wind from side to side, meanders form.
In the diagram, above, marker D is pointing to a __________, which is a landform that
forms when a river slows down as it flows into an ocean or lake. As the river slows, it
drops its sediment load, gradually creating a network of small channels and islands. -
(correct answer)d.
delta
