CPALMS Tutorial: Tides

Slide 5: Select the best description of gravity.

• A magnetic force

• A type of energy

• An electrical energy

• An attractive force between two objects

Slide 6: When you go to the beach and hang out for a few hours or observe pictures of the coasts of the world during different times of day, you can see evidence of ____________ by looking at the tides.

Slide 7: What are some effects of gravity we can experience on Earth?

• Earth orbiting around the Sun

• Earth's atmosphere keeps us alive

• Tide

• Increased temperature of the atmosphere
• Seeing the position and phase of the Moon each day

Slide 8: At any given time only half of a sphere, like the Moon or Earth, is illuminated by the ​ (a)   . The other half is in a ​ (b)   or darkness.

• phase
• Sun
• shadow

Slide 8:  The​ (a)   of the Moon results from the amount of the (b)   ​​ ​ side we can see from our ​ (c)   . A ​ (d)   Moon occurs when the illuminated side of the moon is facing away from the Earth. A ​ (e)   Moon occurs when the side of the Moon that faces the E​arth is also facing the Sun.

• phases
• illuminated
• perspective
• New
• Full

Slide 9: What are the different phases of the moon shown in the image?

a

b

c

d

Full Moon

First Quarter

New Moon

Third Quarter

Slide 10: The (a)   gravity pulls on the Earth and since the Earth and the Moon are very ​ (b)   objects that are relatively close to one another.

• Moon's
• massive

Slide 10: ​ The Moon pulls on the Earth with a varying amount of ​ ​ (a)   across the Earth. The side of the Earth​ (b)   to the Moon is pulled on with a greater force than the side further away. This difference in force causes a (c)   on the Earth that results in low tides on the sides of the Earth that are (d)   from the Moon and (e)   tides on both the side facing the Moon and the side away from the Moon.

• force
• closet
• squeeze
• 90 degrees
• high

Slide 12: Organize these options into the right categories

Groups:

(a) High Tide

,

(b) Both

,

(c) Low Tide

• Caused by the Moon’s gravitational pull on the Earth

• Side of Earth toward or opposite the Moon

• The lowest point in the tidal cycle in a day

Slide 13: When the Moon, Sun and Earth are (a)   up together, we get a ​ (b)   tidal bulge. This is called a ​ (c)   Tide. The tidal effects from the Moon and Sun are (d)   together and so the tidal effect is larger.

• lined
• larger
• Spring
• added