Describe how a convection current is produced.

Describe the difference between renewable and nonrenewable resources. Give at least two advantages and two disadvantages of each.

Look at the two question marks between zinc (Zn) and arsenic (As). At the time, no elements were known with atomic weights between 65.2 and 75. But Mendeleev predicted that two elements must exist with atomic weights in this range.

What do artists and scientists have in common? Creative thinking processes Clean laboratory environments Knowledge of computers Lack of imagination FYI this is for science class!

What kind of weather would an occluded front likely bring? a. sunny and warm c. thunderstorms b. much precipitation d. cold and dry

After the diver jumps forward from the diving board the force of gravity will accelerate the diver _ to the direction of motion

Hydroelectric power uses: wind water coal the sun

Two lightweight metal spheres are suspended near each other from insulating threads. One sphere has a net charge; the other sphere has no net charge. The spheres will: A. Attract each other B. Exert no electrostatic force on each other C.

Read the given list of organisms. squirrel, zebra, tortoise, rabbit, horse What best describes the role of these five organisms in a food web?

What are the SI units for specific heat capacity

What are starburst galaxies and what do they have to do with galaxy evolution?