Unit 15 Lesson 8 What are Tides?

Front

What are tides?

Back

The rising and falling of Earth's ocean surface

Front

What causes tides?

Back

The gravitational pull of the moon and sun

Front

What is high tide?

Back

A period of high water levels

Front

How do tides affect the Earth's surface?

Back

They alter the surface by changing water levels

Tags

NGSS.HS-ESS2-5

Front

Which activity is the easiest to do during high tides?

Back

Surfing

Front

What are Spring tides?

Back

tides that are higher and lower than usual

Front

When do neap tides occur?

Back

when the Sun and Moon are at a 90 degree angle to the Earth

Front

How often do tides occur each day?

Back

2 times a day

Front

Why do tides not occur at the same time every day?

Back

because the Earth takes a little longer than 24 hours to rotate

Front

What happens to tides when the Moon is closer to the Earth?

Back

tides become stronger

Tags

NGSS.HS-PS2-4