which of the following drives the movement of convection currents

A. pressure differences

B. density differences

C. volume differences

Why is earth's surface not riddled with craters as is that of the moon?

Recrystallization involves any chemical, physical, or biological changes that take place after sediments are deposited and burial and lithification occur when unconsolidated sediments are transformed into sedimentary rocks. True or False?

An electron moving at4.00 * 103m/sin a 1.25-Tmagnetic field experiences a magnetic force of1.40 * 10-16N. What angle does the velocity of theelectron make with the magnetic field? There are twoanswers

A physics major is cooking breakfast when he notices that the frictional force between the steel spatula and the dry steel frying pan is only 0.100 N. Knowing the coefficient of kinetic friction between the two materials (0.

What type of reactions releases energy. a. Combustion b. Displacement c. Double displacement d. Synthesis

At distances greater than 2 femtometers, the nuclear strong force is stronger than (select all that apply): gravity electromagnetic forces nuclear weak force none of the above

Identifying the Functions of Parts of the Ear Which part of the ear changes sound to a signal that the brain can understand? Which part of the ear carries the signal to the brain?

Which tool would a scientist use to find the mass of an object?

Who are the launched dog on moon A. mark B. lyca C. mcmc D. seul

The excerpt is from an article that Roberto read for science class called "Using the Scientific Method to Study Tomatoes." The student performed an experiment to test his hypothesis about sunlight and plant height using two plants.