Class 7 Exam > Class 7 Questions > What causes the tides in the ocean?a)The stro...
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What causes the tides in the ocean?
- a)The strong wind blowing over the ocean
- b)The rotation of the earth on its axis
- c)The gravitational pull of the sun and the moon
- d)The movement of the clouds in the sky
Correct answer is option 'C'. Can you explain this answer?
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Most Upvoted Answer
What causes the tides in the ocean?a)The strong wind blowing over the ...
- The tides in the ocean are caused by the gravitational pull of the sun and the moon.
- This means that the sun and the moon's gravity pulls on the water in the ocean, causing it to rise and fall in a regular pattern.
- This is why we have high tides and low tides during different times of the day.
- So, when you see the water level at the beach changing, it's because of the sun and the moon pulling on the water.
Topic in NCERT: Tides
Line in NCERT: "The strong gravitational pull exerted by the sun and the moon on the earth's surface causes the tides."
Community Answer
What causes the tides in the ocean?a)The strong wind blowing over the ...
Tides and Their Causes
Tides are the regular rise and fall of sea levels caused primarily by the gravitational forces exerted by the moon and the sun. Understanding these forces helps explain how tides work.
Gravitational Pull of the Moon
- The moon's gravitational force pulls on the Earth's water, creating a bulge in the ocean on the side of the Earth that faces the moon.
- This bulge is what we experience as high tide.
Gravitational Pull of the Sun
- Although the sun is much farther away, it is also massive and exerts a significant gravitational pull on the Earth’s oceans.
- The sun's influence causes additional tidal effects, leading to variations in tide heights.
Earth's Rotation
- As the Earth rotates, different regions pass through these bulges (high tides), while other areas experience low tides.
- This rotation results in the cyclical pattern of tides that we observe.
Types of Tides
- There are two high tides and two low tides in most coastal areas each day.
- The alignment of the Earth, moon, and sun creates spring tides (higher high tides) and neap tides (lower high tides).
Conclusion
In summary, the primary cause of ocean tides is the gravitational pull of the sun and the moon. While other factors like wind and the Earth's rotation have effects, they do not primarily cause tides. Understanding this gravitational relationship is key to comprehending tidal patterns and their significance in marine environments.
Tides are the regular rise and fall of sea levels caused primarily by the gravitational forces exerted by the moon and the sun. Understanding these forces helps explain how tides work.
Gravitational Pull of the Moon
- The moon's gravitational force pulls on the Earth's water, creating a bulge in the ocean on the side of the Earth that faces the moon.
- This bulge is what we experience as high tide.
Gravitational Pull of the Sun
- Although the sun is much farther away, it is also massive and exerts a significant gravitational pull on the Earth’s oceans.
- The sun's influence causes additional tidal effects, leading to variations in tide heights.
Earth's Rotation
- As the Earth rotates, different regions pass through these bulges (high tides), while other areas experience low tides.
- This rotation results in the cyclical pattern of tides that we observe.
Types of Tides
- There are two high tides and two low tides in most coastal areas each day.
- The alignment of the Earth, moon, and sun creates spring tides (higher high tides) and neap tides (lower high tides).
Conclusion
In summary, the primary cause of ocean tides is the gravitational pull of the sun and the moon. While other factors like wind and the Earth's rotation have effects, they do not primarily cause tides. Understanding this gravitational relationship is key to comprehending tidal patterns and their significance in marine environments.
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What causes the tides in the ocean?a)The strong wind blowing over the oceanb)The rotation of the earth on its axisc)The gravitational pull of the sun and the moond)The movement of the clouds in the skyCorrect answer is option 'C'. Can you explain this answer?
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