Tides

High and low tides are caused by:

• the Moon's gravitational pull

• periodic powerful tsunami waves

• water sloshing around due do Earth's elliptical orbit

• powerful thunderstorm winds

Which response best explains changing tides on Earth:

• The Moon circles the Earth and creates a bulge as it sweeps around. The bulge is high tide.

• The Earth rotates and different regions are pulled into the bulge created by the Moon's gravitational pull.

• The periodic earthquakes from the mid-ocean ridge send micro-tsunami twice per day to coastlines around the world.

• Powerful thunderstorms form twice a day in the middle of the oceans, these send powerful waves to coastlines.

Determine the tide that each region would be experiencing:

a

b

Low tide

High tide

Determine the tide that each region would be experiencing:

a

b

High tide

Low tide

Most coastlines around the world experience ​ (a)   high tides a day on most days.

• two (2)
• one (1)
• three (3)
• four (4)
• no

Organize these options into the right categories

Groups:

(a) High tide

,

(b) Low tide

• 
• 

During a neap tide, the sun, moon, and earth are at a ___________ angle.

• 360 degree

• 23.5 degree

• 45 degree

• 90 degree

What happens when there is a spring tide

• high tides 
• really high tides
• low tides

What type of tide will occur at 9:30 a.m.?

• low 
• high 
• none
• high and low

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

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