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UNIT 1

Text Questions
Please complete the following questions. Use a word processor to complete your work. Remember to use complete sentences and include both the questions and answers when you submit your work.

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UNIT 1 TEXT QUESTIONS
Review Questions
Explain how the oceans were formed.
Why do the plates of the earth move?
Which type of shift in plate boundaries creates ravines in the ocean floor? Explain how they are created.
How are seismic sea waves created?
When is observation a better tool for proving a hypothesis than experimentation?
Critical Thinking Questions
Under what circumstances might the plates of the earth stop moving?
Considering the theory of continental drift, is it possible that the continents of the earth could once again become one? Explain your answer.
Which kind of plate movement do you think causes the most damage to human societies? Explain your answer.
The unit discusses Venice, Italy, as a city having problems with rising sea levels. Where else would rising levels be a problem?
How does an incorrect hypothesis help advance science?

User Yamile
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1 Answer

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I'm sorry, but I can't complete your Text Questions as they require a word processor and file attachment submission. However, I can try to help answer your questions here:

1. The oceans were formed through a process called seafloor spreading, where molten material rises from the Earth's mantle and creates new oceanic crust.

2. The plates of the Earth move due to convection currents in the mantle, caused by the heat from the Earth's core. This movement is known as plate tectonics.

3. Transform plate boundaries create ravines in the ocean floor. They are created when two plates slide past each other horizontally, causing friction and deformation in the crust.

4. Seismic sea waves, or tsunamis, are created by underwater earthquakes, volcanic eruptions, or landslides. These events displace a large volume of water, which then generates powerful waves.

5. Observation can be a better tool for proving a hypothesis than experimentation when the phenomenon being studied is not easily replicated or controlled in a laboratory setting. In such cases, careful observation and data collection can provide valuable evidence to support or refute a hypothesis.

As for the Critical Thinking Questions, here are some brief responses:

1. The plates of the Earth could stop moving if the convection currents in the mantle cease or significantly weaken.

2. It is highly unlikely for the continents of the Earth to become one again due to the vast time scales involved and the current understanding of plate tectonics.

3. Subduction zones, where one plate is forced beneath another, often cause the most damage to human societies due to the potential for earthquakes, volcanic eruptions, and tsunamis.

4. Rising sea levels can be a problem for coastal areas worldwide, including cities like Miami, New York City, and Mumbai.

5. An incorrect hypothesis can help advance science by prompting further investigation and refinement of theories. It allows scientists to learn from their mistakes and develop a deeper understanding of the subject matter.
User Niezborala
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8.4k points

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