Question

1. which of the following has the strongest gravitational pull on the earth?

○ the moon
○ earths magnetic core
○ the atmosphere
○ the sun
○ centrifugal force
question 18
2 pts

1. the highest that a tide rises in a day is called the:

○ spring tide.
○ neap tide.
○ tidal range.
○ high water level.
○ low water level.

Explanation:

Question 17

Gravitational pull depends on mass and distance (Newton's law of gravitation: \( F = G\frac{m_1m_2}{r^2} \)). The Sun has much greater mass than the Moon, and though it's farther, its mass dominates. Earth’s magnetic core, atmosphere, and centrifugal force (a fictitious force, not gravitational) don’t exert gravitational pull on Earth from an external body. So the Sun has the strongest gravitational pull on Earth.

• Spring tide: Higher tides due to Sun - Moon alignment, not the daily highest rise.
• Neap tide: Lower tidal range, not the highest rise.
• Tidal range: Difference between high and low tides.
• High water level: Defined as the highest a tide rises in a day.
• Low water level: The lowest a tide falls.

Answer:

the sun

Question 18