Earth, Moon, and the Sun
Each subtopic includes About section, revision page link, 10 preview questions, and practice CTAs.
Rotation of the Earth
SubtopicRotation of the Earth under Earth, Moon, and the Sun for Grade 7 CBSE.
Preview questions (no answers)
- 1.
If you are at the North Pole, the Earth seems to rotate in which direction?
A.Clockwise
B.Anticlockwise
C.Upward
D.Downward
- 2.
Which of these best describes Earth's rotation?
A.The Earth moving around the Moon
B.The Earth spinning like a top
C.The Earth moving around the Sun
D.The Sun spinning around the Earth
- 3.
As the Earth rotates, the side moving away from the Sun's light experiences:
A.Sunrise
B.Noon
C.Sunset
D.Summer
- 4.
As the Earth rotates, the side moving into the Sun's light experiences:
A.Sunset
B.Sunrise
C.Midnight
D.Winter
- 5.
What would be the effect on the Coriolis effect if the Earth rotated more slowly?
A.It would become stronger
B.It would become weaker
C.It would stay the same
D.It would disappear completely
- 6.
How many times does the Earth rotate on its axis in the time it takes to orbit the Sun once?
A.Once
B.365.25 times
C.24 times
D.12 times
- 7.
Why is the duration of day and night exactly 12 hours each at the Equator throughout the year?
A.Because the Equator is closest to the Sun
B.Because the Circle of Illumination always bisects the Equator
C.Because the Equator does not rotate
D.Because the Earth is not tilted at the Equator
- 8.
What would be the effect of Earth's rotation on a long-range sniper bullet or a missile?
A.It must be accounted for because the target moves while the projectile is in the air.
B.It has no effect because the projectile is too small.
C.It only has an effect if the projectile moves at the speed of sound.
D.It only matters if the projectile is moving East to West.
- 9.
Why does a pendulum's plane of swing appear to rotate 360 degrees in 24 hours at the North Pole, but takes longer at 45 degrees North?
A.The effect of rotation on the pendulum depends on the sine of the latitude.
B.Gravity is weaker at 45 degrees latitude.
C.The air is denser at the poles, pushing the pendulum.
D.The Earth's crust is thicker at the poles.
- 10.
How many degrees does the Earth rotate in 6 hours?
A.B.C.D.
Download the worksheet for Earth, Moon, and the Sun - Rotation of the Earth to practice offline. It includes additional chapter-level practice questions.
Revolution of the Earth
SubtopicRevolution of the Earth under Earth, Moon, and the Sun for Grade 7 CBSE.
Preview questions (no answers)
- 1.
The word 'Solstice' literally refers to the time when the Sun:
A.Moves fastest
B.Disappears
C.Stands still (at the Tropics)
D.Is closest to Earth
- 2.
On which day does the Southern Hemisphere have its shortest day?
A.December 22
B.June 21
C.March 21
D.September 23
- 3.
Which of the following is NOT a result of Earth's revolution?
A.Change of seasons
B.Varying lengths of day and night
C.The occurrence of leap years
D.The formation of tides
- 4.
The revolution of the Earth takes approximately how many days to complete?
A.365 days
B.days
C.366 days
D.364 days
- 5.
Study the diagram showing the Earth's revolution. During the Earth's six-month journey through its orbit from Position A (March 21) to Position C (September 23), what specific phenomenon occurs at the North Pole?
A.It remains in continuous darkness for the entire period.
B.The Sun rises and sets every 24 hours as it does at the Equator.
C.It experiences a period of six months of continuous daylight.
D.The Sun passes directly overhead at the zenith every day at noon.
- 6.
The cycle of seasons repeats every year because of Earth's:
A.Rotation on its axis
B.Revolution around the Sun
C.Expansion and Contraction
D.Tidal movements
- 7.
At which position in its orbit is the Earth during the month of July?
A.Perihelion
B.Aphelion
C.Equinox
D.Solstice
- 8.
Which factor most determines the specific dates of the equinoxes and solstices?
A.The speed of Earth's rotation
B.The gravitational pull of the Moon
C.The position of Earth in its orbit and its axial tilt
D.The amount of sunspots on the Sun's surface
- 9.
If the Earth's orbit were a perfect circle instead of an ellipse, which of the following would be true?
A.There would be no seasons at all.
B.The seasons would be of exactly equal duration.
C.The Earth would not have a leap year.
D.The Earth would fly away from the Sun.
- 10.
What happens to the South Pole on September 23rd?
A.The Sun sets for 6 months of darkness.
B.The Sun rises for 6 months of daylight.
C.It is the middle of the 6-month dark period.
D.The Sun is directly overhead.
Download the worksheet for Earth, Moon, and the Sun - Revolution of the Earth to practice offline. It includes additional chapter-level practice questions.
Changing view of night sky from the Earth
SubtopicChanging view of night sky from the Earth under Earth, Moon, and the Sun for Grade 7 CBSE.
Preview questions (no answers)
- 1.
A celestial body that revolves around a planet is called a:
A.Star
B.Satellite
C.Comet
D.Galaxy
- 2.
The tilt of the Earth's axis is responsible for:
A.Change in phases of the moon
B.Occurrence of seasons
C.Formation of tides
D.Day and night
- 3.
Which phase of the moon is seen just after the New Moon?
A.Full Moon
B.Waxing Crescent
C.Waning Crescent
D.First Quarter
- 4.
The distance between celestial bodies is often measured in:
A.Kilometers
B.Miles
C.Light years
D.Kilograms
- 5.
Due to the Earth's orbital motion around the Sun, the stars in the night sky appear to shift their positions slightly every day. If a specific star rises in the eastern horizon at 8:00 PM tonight, at approximately what time will it rise tomorrow night from the same location?
A.8:04 PM
B.7:56 PM
C.8:00 PM
D.9:00 PM
- 6.
The phases of the Moon follow a cycle. Which sequence is correct?
A.New Moon -> Full Moon -> First Quarter -> Last Quarter
B.New Moon -> First Quarter -> Full Moon -> Last Quarter
C.Full Moon -> New Moon -> First Quarter -> Last Quarter
D.First Quarter -> Full Moon -> New Moon -> Last Quarter
- 7.
If the Earth stopped rotating on its axis, what would happen to the view of the stars?
A.The stars would stop appearing to move across the sky during the night
B.The stars would appear to move twice as fast
C.We would no longer see any stars
D.The constellations would change shape
- 8.
A 'Solar Day' is measured as the time between two consecutive 'Solar Noons'. How long is this on average?
A.23 hours 56 minutes
B.24 hours
C.24 hours 4 minutes
D.24 hours 50 minutes
- 9.
Which of these factors does NOT contribute to the change of seasons on Earth?
A.The tilt of the Earth's axis
B.The revolution of the Earth around the Sun
C.The parallelism of the Earth's axis
D.The changing distance between the Earth and the Sun
- 10.
What is the 'Analemma'?
A.A type of lunar eclipse
B.The figure-eight curve representing the Sun's position in the sky at the same time each day over a year
C.The ring of light seen during an annular eclipse
D.The path the Moon takes around the Earth's center
Download the worksheet for Earth, Moon, and the Sun - Changing view of night sky from the Earth to practice offline. It includes additional chapter-level practice questions.
Seasons on the Earth
SubtopicSeasons on the Earth under Earth, Moon, and the Sun for Grade 7 CBSE.
Preview questions (no answers)
- 1.
Which star is at the center of our Solar System?
A.Sirius
B.Polaris
C.The Sun
D.Proxima Centauri
- 2.
The word 'Equinox' comes from Latin words meaning ________.
A.Equal Night
B.Hot Sun
C.Cold Earth
D.Long Day
- 3.
When the Northern Hemisphere is tilted away from the Sun, it experiences ________.
A.Summer
B.Winter
C.Spring
D.Equinox
- 4.
Which of these is NOT a season found on Earth?
A.Summer
B.Winter
C.Spring
D.Solar
- 5.
In the Northern Hemisphere, consider the period of time immediately following the Summer Solstice (June 21) until the Autumnal Equinox (September 23). Which of the following correctly describes the trend in day length during this interval?
A.The days continue to get longer until they reach their maximum in September.
B.The days start getting shorter and are immediately shorter than the nights.
C.The days gradually become shorter but remain longer than the nights.
D.The days and nights remain equal in length throughout this period.
- 6.
Between March 21 (Vernal Equinox) and June 21 (Summer Solstice), the Earth moves through one-fourth of its orbit. During this period, in which direction do the Sun's vertical rays appear to shift on the Earth's surface?
A.From the Tropic of Cancer towards the Equator
B.From the Equator towards the Tropic of Cancer
C.From the Equator towards the Tropic of Capricorn
D.From the Tropic of Capricorn towards the Equator
- 7.
If the Earth's axis were tilted at , which of these would happen?
A.The Sun would always be directly over the poles
B.There would be no variation in day length throughout the year
C.One hemisphere would always be in darkness
D.The Earth would fly out of its orbit
- 8.
In a scientific simulation, the Earth's speed of revolution around the Sun is reduced by exactly , while its speed of rotation on its axis and its axial tilt of remain completely unchanged. How would this change specifically affect the seasons on Earth?
A.The duration of the 'Polar Night' at the North Pole would remain 6 months, but the total number of days in a year would decrease.
B.The Earth would stop having seasons because the slower speed would cause the axis to gradually straighten to .
C.Each individual season, such as Summer or Winter, would last twice as long (approximately 6 months each) as it does now.
D.The difference in temperature between Summer and Winter would double because the Earth would spend more time near the Sun.
- 9.
Imagine two hypothetical planets, Planet Alpha and Planet Beta, orbiting a star similar to our Sun. Planet Alpha has an axial tilt of , while Planet Beta has an axial tilt of . Based on your understanding of Earth's seasons, which of the following statements is most accurate?
A.Planet Alpha would experience much more extreme temperature differences between its summer and winter seasons than Planet Beta.
B.Planet Beta would have a much larger geographic area experiencing the 'Midnight Sun' phenomenon compared to Planet Alpha.
C.The 'Torrid Zone' (tropical region) on Planet Alpha would extend from the equator to North and South.
D.Planet Alpha would not experience any seasonal changes because its tilt is less than Earth's tilt.
- 10.
What determines the boundaries of the Tropics ( N and S)?
A.The distance of the Moon from the Earth
B.The angle of the Earth's axial tilt
C.The speed of the Earth's rotation
D.The diameter of the Sun
Download the worksheet for Earth, Moon, and the Sun - Seasons on the Earth to practice offline. It includes additional chapter-level practice questions.
Preview questions (no answers)
- 1.
The Moon reflects light from the:
A.Earth
B.Sun
C.Stars
D.Mars
- 2.
What color does the Moon appear during a 'Blood Moon'?
A.Blue
B.Green
C.Red
D.White
- 3.
During an eclipse, the three celestial bodies must be in a:
A.Triangle
B.Circle
C.Straight line
D.Square
- 4.
The moon is a natural _______ of the Earth.
A.Planet
B.Satellite
C.Star
D.Comet
- 5.
A solar eclipse occurs when the Moon is positioned between the Sun and the Earth during the New Moon phase. If the orbital conditions remain favorable for an eclipse alignment, which event is most likely to be observed approximately two weeks after a total solar eclipse?
A.A second solar eclipse during the New Moon phase
B.A lunar eclipse during the First Quarter phase
C.A lunar eclipse during the Full Moon phase
D.An annular solar eclipse during the Full Moon phase
- 6.
Which alignment is correct for a Solar Eclipse?
A.Sun - Earth - Moon
B.Earth - Sun - Moon
C.Sun - Moon - Earth
D.Moon - Sun - Earth
- 7.
During a total solar eclipse, animal behavior often changes because _____.
A.They are frightened by the Moon.
B.The sudden darkness mimics nightfall.
C.The Moon's gravity becomes stronger.
D.The Sun's radiation becomes poisonous.
- 8.
What is the 'antumbra'?
A.The part of the shadow where the light source is totally blocked.
B.The part of the shadow where the light source is only partially blocked.
C.The region beyond the tip of the umbra where the observer sees an annular eclipse.
D.The region of the Moon not hit by sunlight.
- 9.
How many eclipses (solar and lunar combined) usually occur in a standard year?
A.Exactly 2
B.4 to 7
C.10 to 12
D.0 to 1
- 10.
The 'First Contact' during a solar eclipse refers to:
A.When the Moon's edge first touches the Sun's edge.
B.When the Moon completely covers the Sun.
C.When the Moon starts to leave the Sun's disk.
D.When the shadow first touches the Earth.
Download the worksheet for Earth, Moon, and the Sun - Eclipses to practice offline. It includes additional chapter-level practice questions.
Solar eclipse
SubtopicSolar eclipse under Earth, Moon, and the Sun for Grade 7 CBSE.
Preview questions (no answers)
- 1.
During a total solar eclipse, the sky becomes dark enough to see ______.
A.Only the Sun
B.Stars and planets
C.Nothing at all
D.The Moon's craters
- 2.
A solar eclipse is a ______ event.
A.Daily
B.Rare
C.Constant
D.Nightly
- 3.
The Earth revolves around the ______.
A.Moon
B.Sun
C.Mars
D.Jupiter
- 4.
The moon revolves around the ______.
A.Sun
B.Earth
C.Mars
D.Venus
- 5.
A solar eclipse occurs when the Moon blocks the Sun's light. As shown in the diagram, the shadow cast by the Moon consists of two regions: the Umbra and the Penumbra. What scientific principle explains why the Penumbra (the region of partial shadow) is formed?
A.The Earth's atmosphere scatters sunlight into the shadow region
B.The Moon is semi-transparent, allowing some light to pass through
C.The Sun is an extended source of light, not a single point source
D.The Moon reflects a portion of the sunlight back to the Earth
- 6.
Which ancient civilization is famous for keeping detailed records of solar eclipses?
A.The Greeks
B.The Babylonians
C.The Mayans
D.All of the above
- 7.
The width of the path of totality is approximately how many kilometers?
A.to km
B.to km
C.to km
D.km
- 8.
How many solar eclipses (of any type) can occur in a single calendar year at maximum?
A.2
B.5
C.7
D.12
- 9.
What part of the Sun is responsible for the 'Baily's Beads' phenomenon?
A.The Corona
B.The Chromosphere
C.The Photosphere
D.The Sunspots
- 10.
The angular diameter of the Moon and the Sun are both approximately degrees. This coincidence is because:
A.The Sun is 400 times larger than the Moon and also 400 times farther away
B.The Moon and Sun are the same size
C.The Earth's atmosphere magnifies the Moon
D.The Sun's gravity compresses the Moon's appearance
Download the worksheet for Earth, Moon, and the Sun - Solar eclipse to practice offline. It includes additional chapter-level practice questions.
Lunar eclipse
SubtopicLunar eclipse under Earth, Moon, and the Sun for Grade 7 CBSE.
Preview questions (no answers)
- 1.
Can a lunar eclipse happen during a New Moon?
A.Yes
B.No
C.Only in summer
D.Only at the equator
- 2.
What is the shape of the Moon?
A.Flat
B.Square
C.Spherical
D.Triangle
- 3.
During a lunar eclipse, the shadow of the Earth falls on the ________.
A.Sun
B.Moon
C.Mars
D.Stars
- 4.
A Lunar Eclipse occurs on which of these days?
A.Purnima (Full Moon)
B.Amavasya (New Moon)
C.Ekadashi
D.Monday
- 5.
Which of these is a requirement for a total lunar eclipse to occur?
A.The Moon must be at its closest point to Earth
B.The Moon must pass through the center of the Earth's umbra
C.The Sun must be at the zenith
D.The Earth must be at its farthest point from the Sun
- 6.
The alignment of three celestial bodies in a straight line is technically known as ______.
A.Syzygy
B.Aphelion
C.Perihelion
D.Solstice
- 7.
During a total lunar eclipse, what is the maximum time the Moon can stay in the umbra (totality)?
A.7 minutes
B.1 hour and 47 minutes
C.12 hours
D.24 hours
- 8.
Which of the following describes the 'Contact U4' point of a lunar eclipse?
A.The moment the Moon completely enters the umbra
B.The moment the Moon begins to leave the penumbra
C.The moment the Moon's last edge leaves the Earth's umbra
D.The moment the Moon is at the center of the shadow
- 9.
What would be the effect on a lunar eclipse if the Earth were replaced by a much larger planet like Jupiter?
A.The eclipse would last much longer
B.The eclipse would be much shorter
C.The Moon would appear brighter during totality
D.No eclipse would ever occur
- 10.
If you are in a location where the Moon sets while it is still in the middle of a total eclipse, you are witnessing:
A.A total eclipse at moonset
B.A penumbral eclipse only
C.A partial eclipse
D.An impossible event
Download the worksheet for Earth, Moon, and the Sun - Lunar eclipse to practice offline. It includes additional chapter-level practice questions.