Question

constructed response using r.a.c.e. strategy what are tsunamis and how are they formed? r restate the question a answer the question c cite evidence from the text e explain your answer tsunamis tsunamis are large waves that are usually caused as the aftermath of an earthquake or volcanic eruption. the abrupt movement in the ocean floor, causes waves to form in the middle of the ocean. these are known as “seismic waves.” as the wave travels towards shore, it begins to gain massive height. most tsunamis occur in the pacific ocean. this is due to the fact that it is known as earth’s “ring of fire,” or the area where most tectonic shifts occur such as volcanic eruptions and earthquakes. once the lowest part of the wave hits, it creates a vacuum effect. when this happens, the sea water retreats back, exposing the bare sea floor. this is warning that the tsunami will hit shore. highlight in green the part of the text that states the definition of a tsunami highlight in red the part of the text that describes what “seismic waves” are. highlight the part of the text that describes what happens when the lowest part of the waves hits. highlight in blue the part of the text that explains why most tsunamis occur in the pacific ocean.

Explanation:

First, complete the highlighting tasks as instructed, then use the R.A.C.E. strategy to structure the response:

1. Restate: Rephrase the core question about tsunamis and their formation.
2. Answer: Define tsunamis and summarize their formation process.
3. Cite: Pull direct evidence from the provided text about tsunamis.
4. Explain: Connect the cited evidence to the answer to clarify the logic.

Highlighting Completion:

• Green (Definition of a tsunami): "Tsunamis are large waves that are usually caused as the aftermath of an earthquake or volcanic eruption."
• Red (What "seismic waves" are): "The abrupt movement in the ocean floor, causes waves to form in the middle of the ocean. These are known as "seismic waves.""
• Yellow (Lowest wave part impact): "Once the lowest part of the wave hits, it creates a vacuum effect. When this happens, the sea water retreats back, exposing the bare sea floor."
• Blue (Pacific Ocean tsunami reason): "Most tsunamis occur in the Pacific Ocean. This is due to the fact that it is known as Earth's "ring of Fire," or the area where most tectonic shifts occur such as volcanic eruptions and earthquakes."

R.A.C.E. Strategy Response:

Restate the Question:

What are tsunamis, and what processes create them?

Answer:

the Question:
Tsunamis are massive ocean waves triggered by sudden ocean floor disturbances, and they form as these disturbances generate waves that grow in height as they near shore.

Cite Evidence from the Text:

• "Tsunamis are large waves that are usually caused as the aftermath of an earthquake or volcanic eruption."
• "The abrupt movement in the ocean floor, causes waves to form in the middle of the ocean. These are known as "seismic waves." As the wave travels towards shore, it begins to gain its massive height."
• "Most tsunamis occur in the Pacific Ocean. This is due to the fact that it is known as Earth's "ring of Fire," or the area where most tectonic shifts occur such as volcanic eruptions and earthquakes."

Explain Your Answer:

Tsunamis start when events like earthquakes or volcanic eruptions (common in the Pacific's "Ring of Fire") abruptly move the ocean floor, creating seismic waves. These waves build size as they approach land, and the lowest part of the wave first hitting shore pulls water back, exposing the seafloor as a warning before the full tsunami strikes.