GS One‑Liners
high‑yield facts · smart revision
5107
facts
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Latest facts first
| # | Question & Answer |
|---|---|
| 3476 |
What is the age of the Earth?
-
About 4.54 billion years.
|
| 3477 |
Which planet rotates on its side (North to South)?
-
Uranus.
|
| 3478 |
Which planet rotates from East to West?
-
Venus.
|
| 3479 |
Which planets have rings?
-
Saturn, Jupiter, Uranus, Neptune (but Saturn is most prominent).
|
| 3480 |
Which planet is the least dense?
-
Saturn.
|
| 3481 |
Which planet has the fastest rotation?
-
Jupiter.
|
| 3482 |
Which planet has the fastest orbital speed?
-
Mercury.
|
| 3483 |
Which planet is the hottest and has the most circular orbit?
-
Venus.
|
| 3484 |
Which is the largest moon in the Solar System?
-
Ganymede.
|
| 3485 |
What is the maximum duration of totality in a solar eclipse?
-
7 minutes 40 seconds.
|
| 3486 |
What causes an annular eclipse?
-
When the observer is located in the antumbra.
|
| 3487 |
What is the Penumbra?
-
The lighter outer shadow where light is partially blocked.
|
| 3488 |
What is the Umbra?
-
The darkest central part of a shadow where light is completely blocked.
|
| 3489 |
When can a lunar eclipse occur?
-
Only during a full moon or near full moon.
|
| 3490 |
When can a solar eclipse occur?
-
Only during a new moon.
|
| 3491 |
Why are terrestrial planets rocky?
-
They formed closer to the Sun where gases could not condense and were blown away by solar winds.
|
| 3492 |
What are the first four planets (Mercury to Mars) called?
-
Terrestrial or Rocky Planets.
|
| 3493 |
In which layer of the Sun do solar flares occur?
-
The Corona.
|
| 3494 |
In which layer of the Sun do sunspots form?
-
The Photosphere.
|
| 3495 |
Where is maximum insolation received on Earth?
-
Over subtropical deserts.
|
| 3496 |
What is Perihelion?
-
Earth’s closest position to the Sun (around January 3).
|
| 3497 |
What is Aphelion?
-
Earth’s farthest position from the Sun (around July 4).
|
| 3498 |
What is a Cosmic Year?
-
The 250-million-year period for the Sun to orbit the Milky Way’s center.
|
| 3499 |
What is the process of gases escaping from Earth’s interior in early history called?
-
Degassing.
|
| 3500 |
Who proposed the Big Bang Theory?
-
George Lemaitre.
|