Where does the energy come from which keeps the earth warm?

The closest known star to our solar system is Alpha Centauri, which is approximately 4.30 light-years away. A spaceship with a constant speed of 0.800c relative to the earth travels from Earth to this star.

With the fall of the Soviet Union in the 1990s, parts of the former Soviet bloc became democratic states. How did this most affect international trade? A. It added to the movement of jobs from developing to developed countries. B.

What ocean borders africa on the western coast

How do geologists locate the center of an earthquake? Check all that apply. A. They use seismic waves. B. They compare worldwide data. C. They collect data from seismographs. D. They measure arrival times of surface waves. E.

The word sedition means what?

According to Alonso, Mexican nationalist ideology completely ignores the contributions of which group that was part of colonial Mexican society? A) European whitesB) African slavesC) CreolesD) conquered indigenous peoples

Planets travel at a constant rate around the Sun. a. True b. False

Why do the North and South pole experience seasons differently than the rest of the planet? Why do they have periods of continuous daylight or continuous darkness?

According to the International Astronomical Union, which of the following is one of the criteria for an object to classified as a Planet? Select all that apply.

What physical features are the five largest cities in the u. S. Near?