The Planets
This planet is known as the "Red Planet" due to its reddish appearance.
What is Mars?
The closest star to Earth.
What is the Sun?
The Sun is primarily composed of this element.
What is hydrogen?
The Moon's gravitational pull causes these on Earth.
What are tides?
Small rocky bodies that orbit the Sun, mostly found between Mars and Jupiter.
What are asteroids?
The largest planet in our solar system, known for its Great Red Spot.
What is Jupiter?
Stars are primarily composed of hydrogen and this second most abundant element.
What is helium?
The outermost layer of the Sun's atmosphere, visible during a total solar eclipse.
What is the corona?
The phase of the Moon when it is fully illuminated as seen from Earth.
What is a full moon?
Icy bodies that release gas and dust, forming a glowing coma and tail when near the Sun.
What are comets?
This planet has a day longer than its year and rotates in the opposite direction of most planets.
What is Venus?
The color of a star indicates its surface temperature; blue stars are __________ than red stars.
What is hotter?
The process by which the Sun produces energy in its core.
What is nuclear fusion?
The term for the Moon's orbit around Earth.
What is a lunar orbit?
A meteoroid that survives its passage through Earth's atmosphere and lands on the surface.
What is a meteorite?
Known for its prominent ring system, this planet is the second-largest in our solar system.
What is Saturn?
A massive explosion marking the death of a large star.
What is a supernova?
Dark, cooler areas on the Sun's surface caused by magnetic activity.
What are sunspots?
The phenomenon when the Moon passes between the Earth and the Sun, casting a shadow on Earth.
What is a solar eclipse?
The bright streak of light produced when a meteoroid burns up in Earth's atmosphere.
What is a meteor?
This dwarf planet was reclassified from its planetary status in 2006.
What is Pluto?
The diagram that plots stars according to their luminosity and temperature.
What is the Hertzsprung-Russell diagram?
The layer of the Sun where energy is transported outward by radiation.
What is the radiative zone?
The side of the Moon that is always facing away from Earth.
What is the far side of the Moon?
The region of the solar system beyond Neptune, home to many icy bodies and dwarf planets.
What is the Kuiper Belt?