La Luna y las mareas vivas

The video explains how the moon's gravitational pull creates tides on Earth, with high and low tides occurring every 12 hours. Spring tides, which are more extreme, occur during the new and full moons when the moon and sun's gravitational forces align. These tides can have dramatic effects on rivers, such as the Severn and Amazon, causing large waves. The Black Dragon Tide in China is a notable tidal event, influenced by seasonal winds and the moon's gravity.

What causes the bulges in the ocean that lead to high and low tides?

• The temperature of the water

• The gravitational pull of the moon

• The rotation of the Earth

• The wind patterns

When do spring tides occur?

• During the first quarter moon

• During the new and full moons

• During the summer solstice

• During the winter solstice

What happens in the Severn Estuary during exceptionally high spring tides?

• The river current speeds up

• The river current reverses direction

• The river dries up

• The river overflows its banks

Which river experiences a wave that travels hundreds of kilometers upstream?

• The Yangtze River

• The Amazon River

• The Mississippi River

• The Nile River

What is the Black Dragon Tide known for?

• Being a safe tourist attraction

• Being the longest river wave

• Occurring every month

• Claiming many lives in the past