Explain the relative influence of the sun and the moon on tides


The moon and the sun both influence the movement of the tides but the moon generates the strongest tractive forces because of its close proximity to earth. Earth and moon are in a stable orbit with one another and as they orbit together, the moon's gravity attracts the surface of the ocean. Because Earth's mass is 81 times that of the moon, the center of mass between the two bodies is 1,000 miles inside Earth. Earth's motion around the center of mass of the Earth-moon rotation results in two tidal budges. The sun also affects tides but because it is so far from Earth, the sun's influence on the tides is only 46% that of the moon. If Earth, the moon, and the sun are all in a line, the lunar and solar tides will be additive, resulting in higher high tides and lower low tides, or a spring tide. But if the moon, Earth, and sun form a right angle the solar tide will tend to diminish the lunar tide, resulting in a neap tide, where high tides are not very high and low tides not very low.

Environmental & Atmospheric Sciences

You might also like to view...

Geographic Information Systems (GIS) is ________

A) used to predict rainfall and temperature changes in ecosystems B) used to measure the economic value of ecosystem services C) helping conservation biologists study habitats and study biodiversity D) useful in determining the number of heterotrophs in an ecosystem E) useful in tracking the movements of individual organisms

Environmental & Atmospheric Sciences

Define the term invasive species and give two examples from your textbook

What will be an ideal response?

Environmental & Atmospheric Sciences

Which of the following aqueous solutions of Na2SO4 is hypotonic with respect to a 0.15 M NaCl solution?

A) 0.05 M B) 0.10 M C) 0.15 M D) none of these

Environmental & Atmospheric Sciences

The four components of biodiversity increase the ____ of ecosystems and increase the resistance of ecosystems to harmful invasive species.

A. evenness B. function C. strength D. stability E. fitness

Environmental & Atmospheric Sciences