Earth's Tides

Daily changes in the level of ocean water.

• tides

• currents

• gravity

• moon

What causes tides?

• Differences in gravitational force between the Sun and moon.

• The solar energy generated by the Sun.

• The rotation of Earth.

Tags

NGSS.MS-ESS1-1

NGSS.MS-PS2-4

The ________ is mostly responsible for tides on Earth.

• the Sun

• the moon

• Earth's iron core

Why does the moon have a greater effect on Earth's tides than the sun?

• It is closer.

• It is bigger.

• The Sun has a greater effect.

Tags

NGSS.MS-PS2-4

These tides happen during full moons.

• Spring

• Neap

Tags

NGSS.MS-ESS1-1

These tides happen during first quarter moons.

• Spring

• Neap

Tags

NGSS.MS-ESS1-1

These tides happen when the Earth, moon, and Sun are in a straight line.

• Spring

• Neap

Tags

NGSS.MS-ESS1-1

What tides happen when the moon and Sun are at a 90 degree angle?

• Spring

• Neap

Approximately how many times a day do high tides and low tides occur?

• two

• three

• one

Tags

NGSS.MS-ESS1-1

When tides are higher or lower than average.

• Spring tides

• Neap tides