EARTH
PLANETS
Sun and lifecycle of stars
Universe
?
100

What causes the day and night shifts on Earth?

Earth's rotation around its own axis

100

Star in the center of the solar system

The Sun

100
Closest star to Earth?

The Sun

100

What galaxy is our Solar System in?

Milky Way

100

The largest planet in our solar system 

Jupiter
200

Why do we have seasons?

Because the Earth's axis is tilted

200

How many planets are in the solar system

8

200

Stars form in large clouds of gas and dust called

nebulla

200

What is a huge group of billions of stars called?

Galaxy

200

Hottest planet in our Solar System 

Venus

300

Which season happens when your part of Earth is tilted toward the Sun?

summer

300

Name the gas planets

Jupiter, Saturn, Uranus, Neptune

300

What is the huge explosion that can happen when a massive star dies?

Supernova

300

What do we call the huge explosion that started the Universe?

Big Bang

300

Some black holes spin so fast they can twist space and time around them. (true or false)

true

400

What is the force that pulls everything toward the center of Earth?

Gravity
400

Name the rocky planets

Mercury, Venus, Earth, Mars

400

What is the final stage of a small/medium star like the Sun?

white dwarf

400

Why do we see some galaxies moving away from us?

Because Universe keeps expanding

400

There is a theory that on these two planets, it rains diamonds

Neptune and Uranus

500

If Earth didn’t spin, what would happen?

there would be no day and night; one side would always be hot, the other cold

500

Name the planets in the right order

Mercury → Venus → Earth → Mars → Jupiter → Saturn → Uranus → Neptune

500

After a supernova, a very massive star can collapse into this extremely dense object with gravity so strong that not even light can escape.

Black hole

500

Put these events in the correct order from first to last:


The Universe starts expanding

Stars form

The Big Bang happens

Planets form

Galaxies form


Big Bang → expansion → first stars → stars cluster into galaxies → planets form around stars

500

This planet’s day is longer than its year.

Venus

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