Celestial Objects
Moons & Tides
Astronomical Phenomena
100

Is the Sun a star or a planet? Explain why.

A star. It produces its own light and heat.

100

Specifically how many days does it take for the Moon to complete one orbit around the Earth?

29.5 days

100

Identify the specific motion of the Earth that explains why day and night occur.

The Earth is spinning (rotating) on its axis.

200

What is the specific term for a group of stars that forms a distinct pattern in the night sky?

a constellation

200

What does it mean when the Moon is described as "waxing"?

The bright (illuminated) part of the Moon is growing.

200

During a Lunar Eclipse, what is the Earth casting its shadow onto?

The Moon

300

What does the term "terrestrial" mean when describing planets like Earth or Mars?

It means they are made of rock.

300

What force creates tides on Earth?

The Moon's gravitational force

300

In the model showing the torch and the tilted globe, if Perth is facing the light but has rotated past the beam's direct centre of the beam, what time of day is it?

Afternoon

400

How many stars are estimated to be in the Milky Way galaxy?

Over 100 billion stars

400

Where do "low tides" occur in relation to the high tide bulges created by the Moon?

In the areas between the bulges where water is being pulled away.

400

Which specific season contains the "longest day" of the year due to a solstice?

Summer

500

Define the term "natural satellite" and give one example found in our Solar System.

Any natural object that orbits a planet or a star; examples include the Moon or the Earth.

500

How many high tides does a coastal location typically experience every 24 hours?

Two tides per day
500

Explain why a solar eclipse only prevents sunlight from reaching certain parts of the Earth rather than the whole planet at once.

Because the Moon's shadow is relatively small and only falls on a specific area of the Earth's surface.