Which of the following is a physical change?

A.

a candle burning

B.

shredding a piece of paper

C.

photosynthesis

D.

a garden tool rusting

The Richter scale is a log scale. Each magnitude higher earthquake shakes ten times more than the one below it. So a M3 shakes ten times as much as a M2 earthquake. A M4 shakes 100 times as much as a M2. And a M5 shakes 1000 times as much as a M2.

What properties make a diamond a gemstone

Why is the "Ring of Fire significant in the study of geology? A It is the area where all of the world's mountains are found. B. It is the area where the Earth's plate boundaries are most active. C.

Which is older continental or oceanic crust

Explain how the earth was formed according to scientists

What happened in Russia as a result of actions taken by Peter the great

At independence, the most prosperous country of former French Western Africa was A. Chad B. Senegal C. Côte d'Ivoire D. Benin

Why is mexico city the capital of mexico?

Why do deserts form around areas near the tropics but not the equator

Which of the following is not an object in our solar system? Star Black hole Asteroid Comet