Fill out answers. Then copy them into Blackboard homework section by the due dat

Question

Fill out answers. Then copy them into Blackboard homework section by the due date. All questions are worth 5 points each. See sections 4-1 to 4-4 in Chapter 4. Answer this question: 1. When small pieces of material come together to form larger ones, what is this process called? Is it called aggregation? Accretion? Agglomeration? Adhesion? See sections 6-1 to 6-10 in Chapter 6. Answer these questions: 2. North and South America are moving away from Europe and Africa. What is the name of the process on the ocean floor which causes that? Is it subduction? Or seafloor spreading? Convection? Gravity? Or thermal expansion? 3. How do we believe the Moon was created? (a) Some material that originally came together to formed the Earth spun off to make the Moon (b) The Moon came close to the Earth and was captured into orbit by the Earth's gravity (c) A small planet collided with the Earth and knocked material off that became the Moon 4. The Moon always shows the same side pointed toward Earth. What caused this "synchronous rotation" around the Earth? Was it the Sun's gravity? Or tidal forces from Earth's gravity? Or magnetism? Or impacts by asteroids? See sections 6-10 to 6-25 in Chapter 6. Answer these questions: 5. Mercury is the closest planet to the Sun. Therefore, when is the best time of day to see planet Mercury? Is it near midnight? Or close to sunset or sunrise? Or sometimes near midnight and sometimes near sunset? Or perhaps 3-4 a.m. in the morning? 6. On what planet beyond Earth are there dried-out river beds and minerals such as hematite that indicate liquid water once existed? (There are more questions from Chapter 6 on the next page!) See sections 7-1 to 7-13 in Chapter 7. Answer these questions: 7. What is the cause of the heating of magma and volcanos that erupt on Jupiter's moon Io? Some choices are tidal forces, radioactivity inside the moon, magnetism coming from Jupiter, or sliding of layers inside the moon.

Explanation / Answer

Answer(1)- When small pieces of material come together to form larger ones, then this process is called Accretion.

Amswer(2)- Seafloor Spreading is the name of the process on the ocean floor which causes that north and south america are moving away from Europe and Africa.

Amswer(4)- Tidal forces from Earth's gravity caused this "synchronous rotation" around the earth.

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