Our Solar System
What is at the center of our solar system?
The Sun.
What is the closest star to Earth?
The Sun.
What is an eclipse?
An event that happens when something blocks light in space.
What tool helps us see faraway objects such as stars, planets, and galaxies?
A telescope.
True or False: The Sun is both a star and the center of our solar system.
True.
How many planets are in our solar system?
Eight.
What are stars mainly made of?
Hydrogen and helium gas.
What three objects are involved in the eclipses studied in this lesson?
The Sun, Earth, and Moon.
What is a person who is trained to travel into space called?
An astronaut.
Which planet is closest to the Sun, and which is farthest from the Sun?
Mercury is closest; Neptune is farthest.
What do we call the path that a planet follows around the Sun?
An orbit.
What is a galaxy?
A giant group of stars, gas, dust, and planets held together by gravity.
What are the two main types of eclipses?
Solar eclipse and lunar eclipse.
What machine blasts off and carries people or equipment into space?
A rocket.
Which is bigger: the solar system or the Milky Way galaxy?
The Milky Way galaxy.
Name the eight planets in order from the Sun.
Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune.
What are the three galaxy shapes mentioned in the lesson?
Spiral, elliptical, and irregular.
What happens during a solar eclipse?
The Moon moves between Earth and the Sun and blocks the Sun's light.
What is a satellite?
A machine that travels around Earth in a path called an orbit.
Put these in order from smaller system to larger system:
Solar system - Earth - Milky Way.
Earth – Solar System – Milky Way
Which planet is the smallest, and which planet is the biggest?
Mercury is the smallest, and Jupiter is the biggest.
What can a star's color tell us about the star?
Its temperature. Blue stars are very hot, red stars are cooler than blue stars, and yellow stars are warm and bright like our Sun.
What happens during a lunar eclipse?
Earth moves between the Sun and the Moon, causing Earth's shadow to fall on the Moon.
Give THREE things satellites can help us do.
Any three: take pictures of Earth and space, study weather, track storms, provide GPS/maps, send phone/TV/internet signals, or collect scientific data.
A scientist wants to observe a very distant galaxy. Which tool from the lesson should they use?
A telescope.
Identify these planets:
The hottest planet
The Red Planet
The planet famous for its rings
Venus, Mars, and Saturn.
What is a constellation? Give one example from the lesson.
A constellation is a group of stars that makes a picture or pattern in the sky. Examples include Orion, Leo, and the Big Dipper.
What is a Blood Moon, and during which type of eclipse might we see one?
it is when the Moon appears red during a lunar eclipse.
Name the TWO famous space telescopes mentioned in the lesson.
Hubble Space Telescope and James Webb Space Telescope.
Explain the difference between Earth's rotation and Earth's orbit around the Sun based on what happens to the night sky.
Earth's rotation makes stars appear to move across the sky during the night. Earth's orbit around the Sun causes us to see different stars and constellations during different seasons.
What is the difference between a planet and a moon?
A planet moves around a star, while a moon is a natural object that orbits a planet.
Give THREE ways ancient people used constellations.
They used them to find direction when travelling, tell the seasons, and create stories and legends.
Why don't eclipses happen every month even though the Moon orbits Earth?
Because the Moon's path is tilted, so the Sun, Earth, and Moon do not always line up correctly.
Why are some telescopes launched into space instead of being kept on Earth?
So they do not have to look through clouds or Earth's air.
A space object is made of ice, rock, and dust and develops a glowing tail near the Sun. What is it? Explain how you know.
A comet. Comets contain ice, rock, and dust and develop long glowing tails when they approach the Sun.
What are asteroids, and where are most of them found in our solar system?
Asteroids are rocky pieces left over from the early solar system. Most are found in the asteroid belt between Mars and Jupiter.
Why do stars appear to move across the sky during one night?
Because Earth rotates or spins.
Which eclipse is safe to watch with your bare eyes, and which requires special eclipse glasses?
A lunar eclipse is safe to watch with your eyes. A solar eclipse requires special eclipse glasses.
Give THREE things that rockets can carry into space.
Any three: people, satellites, rovers, and science tools.
A student says:
“A solar eclipse happens when Earth moves between the Sun and Moon.”
What is wrong with the statement, and how would you correct it?
That arrangement describes a lunar eclipse. In a solar eclipse, the Moon moves between the Sun and Earth.
How is a comet different from an asteroid, and what happens to a comet when it gets close to the Sun?
Comets are made of ice, rock, and dust, while asteroids are rocky objects. When a comet gets close to the Sun, it develops a long, glowing tail.
Why can we see different constellations during different seasons of the year?
Because Earth orbits the Sun. As Earth moves to different positions around the Sun, we see different parts of space and therefore different stars and constellations.
A student sees Earth positioned between the Sun and Moon. What eclipse could occur? Explain why.
A lunar eclipse. Earth blocks sunlight from reaching the Moon, so Earth's shadow falls on the Moon.
What was Apollo 11, and why was it important?
Apollo 11 was a famous rocket mission that took astronauts to the Moon in 1969.
Imagine you are an astronaut explaining our place in space. Use these SIX words correctly in your explanation:
Earth – Sun – Solar System – Star – Milky Way – Galaxy
Earth is a planet in our Solar System. The Sun is a star at the center of our Solar System. Our Solar System is located inside the Milky Way, which is a galaxy containing a huge number of stars.