What causes the ocean waves that surfers use for their sport? a. density differences in water b. salinity differences in water c. sunlight heating water d. wind blowing across water

Based on how stars are named, which star is probably brightest

Kristen, a 3-year-old, enjoys taking baths and is always willing to get into the bathtub. Kristen hates to have her fingernails clipped and will run and hide if she sees her mother or father with the nail clippers.

A free electron and a free proton are released in identical electric fields. (i) How do the magnitudes of the electric force exerted on the two particles compare? It is millions of times greater for the electron.

Refracted light rays ... A - are bent as they pass into a different medium B - are absorbed by an object C - are reflected from an object at a variety of angles D - bounce off a medium

Now try the following three examples: elements formula name barium phosphorus The element barium is an Alkaline Earth Metal, which loses two electrons (2) and phosphorus is in Group V, which gains three electrons (3-). It will have the ending "ide".

Two persons are applying forces on two opposite sides of a moving cart. The cart still moves with the same speed in the same direction. What do you infer about the magnitudes and direction of the forces applied?

SI unit of mass and gravity

What is the difference between porosity and permeability

In the diagram below, the planets' relative distances from the Sun are shown. The sizes of the planets are not drawn to scale.

Should athletes be benched if their grades are too low, or should they be allowed to play anyway?