What is one common source of background radiation?

the amount of water returning to the earth through precipitation is blank the amount of water leaving the earth through evaporation

What kind of energy involves the flow of positive charges?

Tubes have a sides of equal lengths what is the fastest way to measure the volume of a cube shaped table

Which has more energy for erosion? A. fast-moving stream B. slow-moving creek C. lake D. rainfall

A wave is moving toward shore with a velocity of 5.0 m/s. If the frequency is 2.5 Hz, what is the wavelength?

Part 1. A girl leaves a history classroom and walks 10 meters north to a drinking fountain. Then she turns and walks 30 meters south to an art classroom. What is the girl's total distance traveled? Part 2. Using the information above from Part 1.

Which of the following is an example of a physical change but not a chemical change? A) The log gives off heat and light as it burns B) A tree stores energy from the sun in its fruit C) A penny lost in the grass slowly changes color D) A water pipe

Land masses that move on Earth are called: a. Continents b. Tectonic continents c. Tectonic plates d. Rock Masses

Will two separate 50db sounds together constitute a 100db sound explain mathematical

How many miles is the moon from the earth