Know It All Friday - 8th Science - 12/9

Why does the moon's gravitational pull have more of effect on tides than the sun's gravitational pull?

• they are the same
• the moon is larger than the sun
• tides are not caused by the moon
• the moon is closer to the Earth than the sun

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

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

Spring tides have the largest tidal ranges because...

• the earth, moon, and sun are aligned for greater gravitational force.

• the moon has the strongest gravitational force.

• the sun has the most gravitational force.

• none of the above

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

• 360 degree

• 23.5 degree

• 45 degree

• 90 degree

What is something that has a larger gravitational field than the Earth?

• my pencil

• a fly

• Mars

• the moon

• the Sun

SELECT ALL THAT APPLY

How are mass and weight different?

• mass never changes

• weight depends on gravity

• mass depends on gravity

• weight never changes

Forces always act in equal and opposite pairs.

• Newton's 1st Law
• Newton's 2nd Law
• Newton's 3rd Law

Newton's _______ Law of Motion means that objects at rest will stay at rest and objects in motion will stay in motion. 

• First
• Second
• Third
• Fourth

Calculate the net force of the object in the image shown.

• 20N
• 35N
• 5N
• 25N

The forces represented by the arrows in the diagrams are applied to the four objects that are at rest on a table. Which object is most likely to move to the right?

• Object W
• Object X
• Object Y
• Object Z