Given that our solar system is now about 4.6 billion years old, when will we need to start worrying about the sun running out of hydrogen for fusion?

The geological age of a planet's surface can be determined from the relative amount of a. impact craters. b. erosion features. c. volcanic features. d. tectonic features.

Deep trenches in the ocean mark places where Deep trenches in the ocean mark places where plates slip sideways relative to one another. hot mantle material rises upward and spreads sideways, pushing the plates apart.

Which coast is The majority of the freshwater in Australia found on

Which of the following Outer China regions is a geological massif and has the youngest, highest plateau in the world? A) Tibetan Plateau B) Inner Mongolia C) Northwestern China D) Pearl River delta E) none of the above

How can someone make a model of a tornado? Using cotten balls and a pen? Explain.

How is the equator similar to the prime meridian? A. Both the equator and prime meridian are lines that divide Earth into the Northern and Southern hemispheres. B.

Match your vocabulary word with its definition. 1. a thin strip of land that connects two larger land masses bicultural 2. of two languages or cultures famine 3. concerning a people who move from place to place globalization 4.

Describe how the galaxies are moving in our universe.

What is the difference between sleet and freezing rain?

Imagine that the value of the US dollar remains high compared to the Canadian dollar for many months. What effect will this most likely have on the amount of goods the US exports to Canada? A. It will decrease US exports to Canada. B.