Planets and Space Basics
True or False
Earth is the only planet in our solar system that has water.
False
Some planets and moons have ice or frozen water, but Earth has liquid water on its surface.
MCQ
What happens when a star runs out of fuel?
A. It stays the same forever
B. It cools and changes
C. It turns into a planet
D. It explodes immediately
B. It cools and changes
MCQ
Which planet has the strongest winds in the solar system?
A. Neptune
B. Saturn
C. Jupiter
D. Uranus
A. Neptune
MCQ
Which planet has the most moons?
A. Earth
B. Jupiter
C. Saturn
D. Mars
C. Saturn
MCQ
What causes a solar eclipse?
A. Earth blocks the Sun from the Moon
B. The Moon blocks the Sun from Earth
C. The Sun blocks Earth from the Moon
D. Clouds cover the Sun
B. The Moon blocks the Sun from Earth
MCQ
Which planet is called the “Morning Star” or “Evening Star”?
A. Mercury
B. Venus
C. Mars
D. Jupiter
B. Venus
Venus is very bright and can be seen in the sky just before sunrise or just after sunset.
True or False
The universe is still expanding.
True
Scientists have discovered that galaxies are moving away from each other, meaning the universe is growing bigger.
MCQ
Which space object is known as a “dirty snowball”?
A. Asteroid
B. Meteor
C. Comet
D. Moon
C. Comet
MCQ
What color is the hottest type of star?
A. Red
B. Yellow
C. White
D. Blue
D. Blue
MCQ
Which object has the strongest gravity?
A. Planet
B. Star
C. Neutron star
D. Black hole
D. Black hole
True or False:
Pluto is still inside the asteroid belt.
False: (Pluto is in the Kuiper Belt.)
MCQ
What is an exoplanet?
A. A planet in our solar system
B. A planet outside our solar system
C. A moon orbiting a planet
D. A dwarf planet
B. A planet outside our solar system
Exoplanets orbit stars other than the Sun. Thousands have been discovered using space telescopes.
True or False
The Sun makes up more than 99% of the mass of the solar system.
TRUE
True or False
The asteroid belt is located between Mars and Jupiter.
True
True or False:
A light-year is a measure of time.
False
it measures distance
MCQ
Which planet is known for its bright rings?
A. Jupiter
B. Saturn
C. Uranus
D. Neptun
B. Saturn
Saturn’s rings are made of ice, rock, and dust, making it the most famous planet with rings.
True or False
Red giant stars are smaller than blue stars.
False
Red giants are very large stars that have expanded as they age, even though they are cooler than blue stars.
MCQ
What causes the phases of the Moon?
A. Earth’s shadow
B. Clouds blocking the Moon
C. The Moon’s position as it orbits Earth
D. The Sun moving around Eart
C. The Moon’s position as it orbits Earth
True or False
Venus is the hottest planet because it is closest to the Sun.
False (it’s hottest due to its thick atmosphere)
MCQ
What happens to a star like our Sun at the end of its life?
A. It explodes into a supernova
B. It becomes a black hole
C. It turns into a white dwarf
D. It disappears completely
C. It turns into a white dwarf
True or False
Stars twinkle because they are moving quickly in space.
False
Stars appear to twinkle because Earth’s atmosphere bends their light as it passes through, not because the stars are moving.
MCQ
What is found at the center of most galaxies?
A. A planet
B. A nebula
C. A supermassive black hole
D. A comet
C. A supermassive black hole
Scientists believe most galaxies, including the Milky Way, have a huge black hole at their center that affects how stars move.
MCQ:
What spacecraft flew by Neptune in 1989?
A. Galileo
B. Voyager 2
C. New Horizons
D. Cassini
B. Voyager 2
MCQ
Which planet has the largest volcano in the solar system?
A. Earth
B. Venus
C. Mars
D. Mercury
C: Mars
MCQ:
Which of these is NOT a moon of Uranus?
A. Titania
B. Oberon
C. Miranda
D. Ganymede
D. Ganymede (Ganymede is a moon of Jupiter)