# What happens when the gravitational forces of the sun and the moon combined?

## What happens when the gravitational forces of the sun and the moon combined?

When the sun and the moon are aligned, or nearly aligned, their gravitational gradient fields add together constructively, leading to extra strong tides (high tide is extra high and low tide is extra low). This alignment happens when the moon is a new moon or a full moon, which occurs about every two weeks.

## When the sun and moon and Earth are at 90 to each other what is the effect on the Earth’s tides?

Tides and Water Levels One week later, when the sun and moon are at right angles to each other, the solar tide partially cancels out the lunar tide and produces moderate tides known as neap tides.

Why does the Moon pull the Earth higher than the Sun?

The moon still pulls the oceans higher than the sun can because it is closer and therefore has a stronger gravitational pull on the Earth’s oceans. Describe the range of the high and low tides during a neap tide. During the neap tide, there is the lowest range between high tide and low tide.

Why does the Moon’s gravity cause tides on Earth?

Twice every day, the sea levels will rise and fall which is known as the tides. It has long been known that the gravitational pull of the moon influences the tides that we experience on Earth. This is because the tides and the moon rising work at similar times. It is not just the moon though, that has an impact on the tides found on Earth.

### How is gravity related to the two bulges?

Gravity, Inertia, and the Two Bulges. The gravitational attraction between the Earth and the moon is strongest on the side of the Earth that happens to be facing the moon, simply because it is closer. This attraction causes the water on this “near side” of Earth to be pulled toward the moon.

### How are tides and inertia related to gravity?

Gravity and inertia act in opposition on the Earth’s oceans, creating tidal bulges on opposite sites of the planet. On the “near” side of the Earth (the side facing the moon), the gravitational force of the moon pulls the ocean’s waters toward it, creating one bulge. On the far side of the Earth, inertia dominates, creating a second bulge.