4.
Give one reason to explain each of the following.
a. Soil is called a renewable resource.
b. Igneous rocks are called primary rocks.
c. Intrusive igneous rocks have large mineral grains.
d. Sedimentary rocks tell us about evolution of life.
e. Rocks containing iron compounds are prone to chemical weathering.
5. Distinguish between the following.
a. Aggradation and degradation
b. Weathering and erosion
c. Dam and levees
d. Physical and Chemical weathering
e. Thermal and dynamic metamorphism
Answers
Answer:
because soil is made after 1000's of year
Explanation:
it takes many years to make one layer of soil that's why soil is renewable resources
Answer:
4.)a.) Soil is considered a renewable resource because it can be restored on a human timescale. When soil is lost by erosion it can be recovered fairly.
b.) Igneous rocks are often called primary rocks because they are at the start of the rock cycle. Their parent material is not sediment or fragments.
c.) Slow cooling means the individual mineral grains have a very long time to grow, so they grow to a relatively large size. Intrusive rocks have a coarse grained texture.
d.) Sedimentary rocks tell us about past environments at Earth's surface. Because of this, they are the primary story-tellers of past climate, life, and major events at Earth's surface. Each type of environment has particular processes that occur in it that cause a particular type of sediment to be deposited there.
e.) The rusting of iron is a common example of it which occurs due to reaction with oxygen. Hence, rocks containing iron compounds easily absorb oxygen from air & forms new chemical compound like iron oxide. Explanation: ... Other types of rock, such as limestone, are easily weathered because they dissolve in weak acids.
5.)a.) Aggradation is an increase in elevation of land usually in river system due to deposition of sediments. Degradation happens because of erosional activities of mainly wind and water.
b.) Weathering involves the breakdown of rocks and minerals on Earth, whereas erosion involves the removal of soil and rock materials.
c.) A dike normally runs along or parallel to a body of water such as a river or a sea, a dam runs across or through a body of water. Levees may be formed naturally or artificially. ... They prevent the water from overflowing and flooding surrounding areas.
d.) Physical, or mechanical, weathering happens when rock is broken through the force of another substance on the rock such as ice, running water, wind, or plant growth. Chemical weathering occurs when reactions between rock and another substance dissolve the rock, causing parts of it to fall away.
e.) Thermal metamorphism: Metamorphismcaused by high temperature is called thermal metamorphism. ... Dynamic metamorphism: Dynamic metamorphism refers to the alteration caused by high pressure during Earth's movements.
HOPE THIS ANSWER WAS USEFUL !!!!!!!!