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Astronomy Year / Week 01 / Tuesday
2/6
Week 01 · Safe Sky Watchers

Tuesday

Day and night
// Sky safety, day and night
⏱ about 15 min

Tuesday: Day and night

Rocket holds up a ball and a small flashlight.

"This ball is Earth," Rocket says. "This light is the Sun."

Raven turns the ball slowly. "What do you notice?" she asks.

Nova hovers close. "One side is bright and one side is dark. Which side has day?"

Earth spins

Earth is a big ball that spins.

Earth makes one full spin every 24 hours.

That is one whole day and night.

Facing the Sun

The side of Earth facing the Sun has daytime.

The side facing away from the Sun has nighttime.

As Earth spins, your home moves from day to night and back.

DAY OR NIGHT?
  • Read the question.
  • Tap your answer.
Your home faces the Sun. Is it day or night?
Your home faces away from the Sun. Is it day or night?
How long does one full spin of Earth take?
Try it
A grown-up holds a flashlight in a dark room.
You hold a ball and turn it slowly.
Put a small sticker on the ball. That is your home.
Watch your sticker go from day to night.
Safety first
A grown-up holds the flashlight.
Do not shine the light in anyone's eyes.
Stickers stay out of mouths.
ONE DAY AT HOME
  • Tap a card.
  • Then tap its spot.
1First
2Next
3Then
4Last

Day here, night there

Right now, it is day on one side of Earth.

On the other side, it is night.

When you wake up, some children far away go to bed.

Earth keeps spinning, so day and night take turns.

SPINNING EARTH
  • Read the question.
  • Tap your answer.
Is it day everywhere on Earth at the same time?
What makes day turn into night at your home?
In the ball model, what is the flashlight?
How many full spins does Earth make in one day and night?
Day and nightTrue or false?
The side of Earth facing the Sun has day.?
The Sun goes out at night.?
Earth spins once about every 24 hours.?
It is night on the whole Earth at once.?
WHY THIS EXERCISEA spinning Earth gives every place a turn at day and night.
Draw Earth with a day side and a night side. Put the Sun on the day side.

You made day and night with a ball! Tomorrow we find out why the Sun seems to move.

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