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16 Terms
What causes day and night
The Earth spinning on its axis.
What causes a year
The Earth orbiting once around the Sun.
How tilted is the Earth’s axis
23.5 degrees.
What causes the seasons
The tilt of the Earth’s axis as it orbits the Sun.
Why is summer warmer than winter
The hemisphere tilted towards the Sun gets more direct sunlight.
How do we see the Moon
Sunlight reflects off the Moon’s surface into our eyes.
Why does the Moon appear to change shape
We see different amounts of the lit side as the Moon orbits Earth.
What is a solar eclipse
When the Moon moves between the Earth and the Sun, blocking sunlight.
What is a lunar eclipse
When the Earth moves between the Sun and the Moon, casting a shadow on the Moon.
What does the Solar System contain
A star (the Sun), eight planets, moons, dwarf planets, and an asteroid belt.
How many planets are in the Solar System
8
What is a star?
A huge ball of hot glowing gas that produces its own light and heat.
What is a constellation
A pattern of stars in the night sky.
What is a galaxy
A massive collection of stars, gas and dust held together by gravity.
What is the Universe
Everything that exists all galaxies, stars, planets, space and time.
What is a light‑year
A unit of distance how far light travels in one year.