ЁЯМЯ Class 7 Science Curiosity – Chapter 12 Solutions
ЁЯМН Earth, Moon and the Sun | Amresh Academy
✍️ ЁЯФ╣ Very Short Answer Type Questions
What causes day and night on Earth?
ЁЯСЙ Answer:
ЁЯМН Day and night are caused by the rotation of the Earth on its axis from west to east
What is the time taken by the Earth to complete one rotation?
ЁЯСЙ Answer:
⏱️ The Earth takes approximately 24 hours
What is the shape of Earth’s orbit around the Sun?
ЁЯСЙ Answer:
☀️ The Earth revolves around the Sun in a nearly circular orbit
What is a solar eclipse?
ЁЯСЙ Answer:
ЁЯМС A solar eclipse occurs when the Moon comes between the Sun and Earth, blocking sunlight
What is the direction of the Earth’s rotation?
ЁЯСЙ Answer:
➡️ The Earth rotates from west to east
ЁЯза ЁЯФ╣ Short Answer Type Questions
Why does the Sun appear to move from east to west in the sky?
ЁЯСЙ Answer:
ЁЯМЮ Because the Earth rotates from west to east
➡️ Sun appears to rise in east and set in west
What is meant by revolution of the Earth?
ЁЯСЙ Answer:
ЁЯФД Revolution is the movement of Earth around the Sun
➡️ Takes 365 days and 6 hours
How does the Moon cause a solar eclipse?
ЁЯСЙ Answer:
ЁЯМС Moon comes between Earth and Sun
➡️ Blocks sunlight and casts shadow on Earth
Why is it not safe to look at a solar eclipse directly?
ЁЯСЙ Answer:
⚠️ Direct viewing can damage eyes
➡️ Due to intense radiation
What is a lunar eclipse?
ЁЯСЙ Answer:
ЁЯМХ A lunar eclipse occurs when Earth comes between Sun and Moon
➡️ Shadow falls on Moon
ЁЯУЦ ЁЯФ╣ Descriptive Answer Type Questions
How does Earth’s rotation cause the cycle of day and night?
ЁЯСЙ Answer:
ЁЯМН As Earth rotates:
- Half facing Sun → Day ☀️
Half away → Night ЁЯМЩ
➡️ This cycle repeats every 24 hours
Explain how the tilt of the Earth leads to seasons.
ЁЯСЙ Answer:
ЁЯМН Earth’s axis is tilted
➡️ Different parts receive different sunlight
➡️ Causes seasons: Summer, Winter, Spring, Autumn
Why do stars appear to move in the sky during the night?
ЁЯСЙ Answer:
⭐ Due to Earth’s rotation
➡️ Stars appear to move east → west
What is the apparent size and how does it relate to solar eclipses?
ЁЯСЙ Answer:
ЁЯУП Apparent size depends on distance + actual size
➡️ Moon appears same size as Sun
➡️ So it can cover the Sun during eclipse
Why do different stars appear in the sky at different times of the year?
ЁЯСЙ Answer:
ЁЯММ Due to Earth’s revolution
➡️ We see different parts of space in different months
ЁЯЪА ЁЯФ╣ Exploring Questions
Why is the total solar eclipse visible only in a small area?
ЁЯСЙ Answer:
ЁЯМС Moon’s shadow is small
➡️ Only limited region experiences total eclipse
What would happen if the Earth’s axis were not tilted?
ЁЯСЙ Answer:
❌ No seasons
➡️ Same climate all year
Why do the poles have six months of day and night?
ЁЯСЙ Answer:
ЁЯМН Due to Earth’s tilt
➡️ Poles face Sun for 6 months (day)
➡️ Away for next 6 months (night)
Why can we safely view a lunar eclipse with the naked eye but not a solar eclipse?
ЁЯСЙ Answer:
ЁЯМХ Moon reflects light → safe
☀️ Sun rays → harmful for eyes
Why do places near the equator experience less seasonal variation?
ЁЯСЙ Answer:
ЁЯМН Sun rays fall directly
➡️ Temperature remains almost constant
