Day, Night and Seasons
The Moon & Its Phases
Tides & Water
Effects on Living & Non-Living Systems
100

What causes day and night on Earth?

Earth rotating (spinning) on its axis.

100

What causes the Moon’s phases?

The Moon’s position as it moves around Earth.

100

What causes ocean tides?

The pull of gravity from the Moon (and the Sun).

100

How do seasons affect plants?

They affect when plants grow, flower, and lose leaves.

200

How long does it take Earth to rotate once?

24 hours

200

About how long does it take the Moon to go around Earth?

About 28 days.

200

What are high tide and low tide?

High tide is when water rises; low tide is when water falls.

200

How do seasons affect animals?

Animals may migrate, hibernate, or change behavior.

300

What causes the seasons?

Earth’s tilt and its movement around the Sun.

300

What is the phase called when we see the whole Moon lit up?

Full Moon.

300

How many high tides usually happen each day?

Two.

300

How does sunlight affect living things?

It provides energy for plants and warmth for animals.

400

How long does it take Earth to go around the Sun?

One year (about 365 days).

400

What phase comes after the New Moon?

Crescent Moon.

400

How do tides affect sea animals?

They change where animals can find food and shelter.

400

How does temperature change with the seasons?

It is warmer in summer and colder in winter.

500

Which season has the longest days and shortest nights?

Summer.

500

Why does the Moon look different on different nights?

Because we see different amounts of the lit side as it orbits Earth.

500

How do tides affect people?

They affect fishing, boating, and beach activities.

500

Why is the Sun important for life on Earth?

It provides light and heat needed for living things to survive.