What type of rock is made from molten material from inside the earth? (2 points)
writing part
Igneous
Metamorphic
Sedimentary
Magma
7.
How can we use rocks to determine how an area used to look in the past? (4 points)
wrting part
8.
Which of the following can be considered the opposite of weathering? (2 points)
Fossil formation
Deposition
Freezing of water
Evaporation of water
9.
Scientists found rock deep in the earth and determined it was three billion years old. This rock is most likely which type of rock? (2 points)
Limestone
Igneous
Metamorphic
Sedimentary
10.
What type of rock would likely be found in an ancient riverbed on the earth's surface? (2 points)
Metamorphic
Basalt
Sedimentary
Igneous
11.
Acid rain is an example of (2 points)
deposition
deforestation
mechanical weathering
chemical weathering
12.
Igneous rock is formed from (2 points)
cooling magma or lava
sediments layered on top of each other
other types of rock pressed together
mechanical weathering of basalt
You should repost and indicated your answers/thoughts.
2. The type of rock made from molten material from inside the earth is called Igneous. You can determine the answer by knowing the different types of rocks and their formation processes. Igneous rocks are formed when magma (molten material) cools and solidifies either underground (intrusive igneous rocks) or on the earth's surface (extrusive igneous rocks).
4. Rocks can be used to determine how an area used to look in the past through the process of sedimentary deposition. Sedimentary rocks are formed through the accumulation and cementation of sediment particles such as sand, silt, and clay. These sediments can contain fossils, traces of ancient life, and imprints of past environments. By analyzing the composition and characteristics of sedimentary rock layers, scientists can infer the geological history and reconstruct the past environments of an area.
8. The opposite of weathering is deposition. Weathering refers to the process of breaking down rocks into smaller fragments through physical, chemical, and biological means. On the other hand, deposition is the process of depositing or laying down those weathered particles or sediments. It occurs when the transport energy of wind, water, or ice decreases, causing the sediments to settle and accumulate in a new location.
9. If scientists found a rock deep in the earth and determined it was three billion years old, it is most likely a Metamorphic rock. Metamorphic rocks are formed when pre-existing rocks (igneous, sedimentary, or other metamorphic rocks) undergo profound changes in response to high temperature, pressure, or chemical reactions deep in the Earth's crust. These changes can result in the recrystallization of minerals and the development of new structures, making it difficult to determine the original rock type.
10. The type of rock likely to be found in an ancient riverbed on the earth's surface is Sedimentary. Rivers erode the land and transport sediments, including rocks, minerals, and organic matter, downstream. Over time, these sediments settle and accumulate in riverbeds, forming sedimentary rocks. Therefore, an ancient riverbed would likely contain layers of sedimentary rocks that provide evidence of past water flow and environmental conditions.
11. Acid rain is an example of chemical weathering. Chemical weathering occurs when the chemical composition of rocks and minerals is altered due to exposure to chemical agents or reactions. Acid rain is caused by air pollutants, primarily sulphur dioxide and nitrogen oxides, combining with atmospheric water vapor to create acidic precipitation. This acid rain can react with and dissolve minerals in rocks, leading to their deterioration and erosion.
12. Igneous rock is formed from cooling magma or lava. When molten material, known as magma when it is underground and lava when it reaches the Earth's surface, cools and solidifies, it forms igneous rocks. The cooling rate and composition of the magma or lava determine the texture and mineral composition of the resulting igneous rock. Examples of igneous rocks include granite, basalt, and obsidian. Other options mentioned are incorrect processes for the formation of igneous rocks.