Over the past few decades earth scientists have developed the theory of plate tectonics

The common name for the reflection of a sound wave is an ...

Hydroelectric power plants can generate huge amounts of electricity. Which of these statements best describes the impact of a hydroelectric power plant on the environment? It pollutes the air. It reduces the level of groundwater.

Sun of all the force acting upon an object called the ... force.

The specific heat of a substance is the energy required to produce a certain change in A. state B. appearance C. volume D. temperature

What is the acceleration of a 12 kg object if a force of 74.4 N acts on it?

What are some characteristics that are determined by DNA

Which statements accurately describe convection in water? Check all that apply. Cold water sinks because it is less dense than warm water. Cold water sinks because it is more dense than warm water.

Which of the following sentences about the velocity of an object is NOT true? A. The object's velocity is a scalar quantity. B. When the direction of motion changes, the velocity changes. C.

1. What kind of reaction takes place when garbage decomposes? (Explain your answer) 2. According to the law of conservation of mass, mass is neither created or destroyed. How is mass conserved when trash decomposes? 3.

A switch running stp is classified as a backup bridge. what state is it in