The Earth and its Neighbours - Class 4 - Science
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Questions & Answers - The Earth and its Neighbours | Living Science | Science | Class 4
Tick ✅ the correct answer.
The sun is a
a. constellation.
b. planet.
c. star.
d. satellite.
The correct answer to the question "The sun is a" is:
✅ c. star.
The sun is indeed a star, which is a massive, bright, celestial object made of hot gases, primarily hydrogen and helium. It generates energy through nuclear fusion processes.
Tick ✅ the correct answer.
This planet was discovered after the invention of the telescope.
a. Mercury
b. Venus
c. Mars
d. Neptune
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Sign up nowWhich movement of the earth is called rotation?
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Sign up nowHOTS Questions - The Earth and its Neighbours | Living Science | Science | Class 4
If the earth stops rotating on its axis, what kind of changes would you expect?
If the Earth were to stop rotating on its axis, there would be several significant and drastic changes:
Day and Night Cycle Altered: A day on Earth would last as long as a year, which is about 365 days. This means one side of the Earth would have continuous daylight (and high temperatures) for half the year, while the other side would experience continuous night (and cold temperatures) for the same duration.
Climate and Weather Changes: The distribution of temperatures would be drastically different, likely destabilizing weather patterns. Extreme temperatures could make certain parts of the Earth uninhabitable.
Changes in Gravity: The bulge around the Earth's equator, caused by its rotation, would eventually disappear, leading to a more perfect spherical shape. This could affect the gravity slightly stronger at what are now the equatorial regions.
Risk to Biodiversity: Many ecosystems, especially those near the poles and the equator, would be significantly affected by the extreme changes in light and temperature, likely leading to mass extinctions of plant and animal species.
These changes illustrate that the Earth's rotation is critical for maintaining the climate and ecosystems that we know today.
The season in the Northern Hemisphere can never be the same as the season in the Southern Hemisphere. Why?
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