SEASONS
How many seasons does Earth have?
Four
What causes day and night?
Earth’s rotation.
Does the Moon make its own light?
No.
What is a planisphere?
A star map of the night sky.
What causes seasons?
Earth’s tilt and orbit around the Sun.
How long is one Earth rotation?
24 hours.
What makes the Moon shine?
Reflected sunlight.
What does a constellation show?
A pattern of stars.
What is Earth tilted on?
Its axis.
When it is daytime, which side of Earth faces the Sun?
The side facing the Sun.
How long does one Moon cycle take?
About 29 days.
What do you rotate on a planisphere?
The disks.
When is it summer in the Northern Hemisphere?
When it tilts toward the Sun.
Why does the Sun look like it moves across the sky?
Earth is rotating.
What phase is not visible?
New Moon.
Why do constellations change with seasons?
Earth moves around the Sun.
Why doesn’t Thailand have snow?
It is near the equator.
Where does the Sun rise?
East.
What phase shows the whole Moon bright?
Full Moon.
What line separates sky and land?
Horizon.
How long does Earth take to orbit the Sun?
One year.
Where does the Sun set?
West.
What is a thin curved Moon called?
Crescent Moon.
Who uses planispheres?
Astronomers, students, sailors.
What season has the longest days?
Summer.
What happens if Earth stops rotating?
One side always day, one side always night.
What phase comes after the Full Moon?
Waning phase.
Why does a planisphere not need electricity?
It is a paper star map.
What would happen if Earth had no tilt?
No seasons.
Why are stars visible at night?
There is no sunlight.
Are Moon phases caused by Earth’s shadow?
No.
Name one use of planispheres in history.
Navigation.
Why are seasons opposite in two hemispheres?
One tilts toward the Sun while the other tilts away.
Why is it day in Thailand when it is night elsewhere?
Earth is round and rotating.
What causes a lunar eclipse?
Earth’s shadow covers the Moon.
Why can’t we see all stars at once?
Earth rotates and orbits.
Explain how tilt and orbit work together to make seasons.
Tilt changes sunlight while Earth orbits the Sun.
Explain rotation in your own words.
Earth spins on its axis causing day and night.
Explain why the Moon looks different each night.
We see different parts of the lit side as it orbits Earth.
Explain how a planisphere helps find stars.
It shows visible stars for a date and time.