Which scientists supported the heliocentric model of the solar system? Check all that apply.

a. Aristotle

b. Copernicus

c. Galileo Kepler

d. Ptolemy

Which would be the most reliable source of information about the weather

A galvanometer coil having a resistance of 20 Ω and a full-scale deflection at 1.0 mA is connected in series with a 4980 Ω resistance to build a voltmeter. What is the maximum voltage that this voltmeter can read?

If you are caught outdoors in a thunderstorm, why shouldn't you stand under a tree? Can you think of a rea - son why you should not stand with your legs far apart? Or why lying down can be dangerous? (Hint: Consider the electric potential difference.

Select all the substances that can transmit sound waves. a. air b. wood c. water d. ground e. oxygen gas f. empty space

Latent heat of vaporization refers to which changes of state? liquid to gas or gas to liquid solid to gas or gas to solid solid to liquid or gas to liquid gas to liquid or liquid to solid

2. When temperature increases, what happens to the molecules in a chemical reaction?

Mrs Garcia traveled 15 km in 1 hour. What was her average velocity in km/s?

If an atom of nitrogen binds wit three hydrogen atoms to form a molecule of ammonia, how many lone pairs of electrons does nitrogen have? A. One B. Three C. Four D. Five

Match the type of metamorphism to its best definition. Impact metamorphism ? The process in which a rock changes as a result of heat generated from magma. Dynamic metamorphism ? The process in which a rock changes due to pressure directed on it.

What is a perfect bounce in physics? Is it force? High School Physics, not middle school physics.