The decibel scale is used to measure the perceived loudness of a sound.

a. True

b. False

Describe how the potential energy of a river is changed into kinetic energy.

The measure of one of the small angles of a right triangle is 45 less than twice the measure of the other small angle. Find the measure of both angles.

Which of the following statements is the best definition of climate? Climate is the current conditions in the atmosphere. Climate is a particular place's distance from the equator. Climate is the average weather of a particular place.

Which of the following would increase friction? A. Water B. Motor oil C. Sand D. Soap

What is the velocity of a bullet train that moves 400 meters west over 3 minutes anad 20 seconds?

If the mass of an object is 84g and the volume is 12cm3 what is the density

Describe one example of competiton of tropical dry forest

What is the center of a tornado called A. the eye B. The center C. The middle road D. The vortex

Is it legal in Florida for a math teacher forces the kids to do push ups?

Acceleration is best defined as the rate of change of blank of an object