Explain why there are typically two high tides and two low tides each day.

The Moon's gravity pulls the ocean on the near side, and inertia causes a bulge on the far side, creating two high tides.

How does the Sun contribute to tides on Earth?

The Sun's gravity also pulls on the oceans, but its effect is about half that of the Moon due to its greater distance.

Describe what a spring tide is and explain when it occurs.

Spring tides are extreme tides (higher high tides and lower low tides) that occur when the Sun, Moon, and Earth are aligned during the new moon and full moon phases.

What is a neap tide, and under what conditions does it occur?

Neap tides are moderate tides that occur when the Sun and Moon are at right angles to each other, during the first and third quarter moon phases, partially canceling each other's effects.

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What Causes Tides?

Name: What Causes Tides?
Author: Insta~Lesson

8th GradeEarth Science45 min

Learning Objective

I can explain how the gravitational forces of the Moon and Sun cause tides.

Lesson Flow

Watch Video

6 min

Space Science Tutorial: Spring and Neap Tides

AtomicSchool

Practice

14 min

10 questions • Multiple choice & Short answer

Exit Ticket

5 min

“Explain how the positions of the Sun and Moon relative to the Earth affect the strength of tides, differentiating between spring tides and neap tides.”

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