Earth Tides

What is a high tide?

• Sea pulled TOWARD the moon where Earth is CLOSEST to the moon

• Sea pulled AWAY from the moon where Earth is FARTHEST to the moon

• Sea pulled AWAY from the moon where Earth is CLOSEST to the moon

Which body has the greater effect on Earth's tides?

• Sun
• Saturn
• Moon 
• Venus

Wha type of tide would this arrangement of earth-moon-sun create?

• full moon tide

• new moon tide

• neap tide

• spring tide

What type of tides would this arrangement of earth-moon-sun create?

• neap tide
• spring tide
• new moon tide
• full moon tide

Tides are caused by

• strong winds that blow over ocean waters.
• the interaction of Earth, the moon and the sun.
• the shifting of the plates on the ocean floor.
• variations in the salinity of ocean water

What causes tides?

• gravity
• wind
• spring
• neap

If tides alternate from high to low and there are two of each type of tide a day, about how many hours will generally be between each different tide?

• 2 hours
• 6 hours
• 12 hours
• 24 hours

How many low tides and high tides happen in a day?

• 1 low tide, 1 high tide
• 4 low tides, 4 high tides
• 3 low tides, 3 high tides
• 2 low tides, 2 high tides

You visited the beach at 12 pm (noon) and it is high tide. If you return 6 hours later what tide will you see? 

• high 
• low 
• none
• spring 

What do we call the small tides that happen when the sun and moon are at right angles to each other?

• Neap Tide
• Spring Tide
• Larger Change
• Smaller Change