17 Answered Questions for the topic Earth

05/14/19

Would it be possible to calculate the expected frequency of impact craters of all sizes on Earth?

Can the expected frequency of all sizes of impact craters on Earth be calculated based on the preservation of impact craters seen on the Moon? Taking into account the difference in gravity and... more

05/14/19

Why is a new moon not the same as a solar eclipse?

Forgive the elementary nature of this question:Because a new moon occurs when the moon is positioned between the earth and sun, doesn't this also mean that somewhere on the Earth, a solar eclipse... more

05/06/19

Radioactive decay is the main source of the earth's interior heat: fact or theory?

It's believed the main reason that the interior of the Earth hasn't cooled down in 4 billion years is because of the ongoing decay of radioactive elements that keeps adding more heat than is lost... more

04/20/19

Does Earth have a code name?

Everything we discover in the sky get eventually a code name, like NGC 7293, Simeis 147, etc. Does Earth/Moon have a code name too? Or it is just Earth/Moon, etc.?

04/04/19

How significant is a planet's density to the formation of life?

I'm doing some writing set on a fictional earthlike planet that for reasons needs to be substantially larger than Earth but can't have substantially higher gravity. I've been able to compromise... more

03/28/19

Why does the full Moon appear?

I know that the full Moon appears when Sun, Moon and Earth are in a straight line, but if we consider that they are in straight line, why is the Moon illuminated?I mean to say that Earth should... more

03/19/19

Relationship between Mars and Earth rotation?

Is it by pure random chance that Mars and the Earth have nearly the same day duration (Mars day is barely 40 minutes longer, which is just 3% difference), or there is some causal relationship... more

03/14/19

Why isn't Earth a perfect sphere?

In general, almost everyone describes Earth as an perfect sphere, but in reality it isn't a perfect sphere. Is there any specific reason why Earth is not perfect sphere ?

12/01/17

What are 4 reason earth isn’t shaped like a cube?

without knowing it’s a sphere but how do we know it’s not a cube? Why can’t it be a cube 

12/01/17

What are 4 facts we know earth isn’t shaped like a donut?

Some Earth facts, reasons why it’s not donut shape. 

09/27/16

How is there only 3 city states in the whole word?

I am shocked this is not a more common occurence. But Wikipedia only lists: Vatican City, Monaco, and Singapore as the City States in the world? Why are they so rare?

01/20/16

If there is a New Moon at midnight on October 1, when would the next New Moon occur?

If there is a New Moon at midnight on October 1, when would the next New Moon occur?

05/19/15

find gravitational force

A planet has ? the density of earth but 2x the radius. find the surface gravitational force on this planet. (Hint: Earth’s is 10N/Kg)

04/16/15

Earth Surface

The weight of an object varies inversely as the second power of the distance from the center of the earth. The radius of earth is approximately 4000 miles. If a person weights 160 pounds on Earth's... more

01/22/15

How do the seasons change based on your location on earth?

How do the seasons change based on your location on earth?

10/21/14

What is the earths net charge?

The intensity of the earths electric field near its surface is 130 N/C pointing down. What is the earth's net charge? Assuming that this field is caused by it (Use gauss's law)

09/23/14

Is the sun's interior similar to Earth's?

Is this true or not. I am not sure. Please help fast. I need this done by 2:22pm TODAY!

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