16. Which method is used to deliver heat in most central heating systems?

O conduction

O convection

O radiation

Is the following true or false? Continental glaciers fill depressions in the surface with water, where they create cirques.

In what ways does a river carry its load?

Which best explains the statement "It has no definite volume"? A. Its atoms can widely spread out. B. Its atoms stay closely packed. C. It's highly viscous. D. It's highly crystalline.

What Converts sound to a signal in a telephone

The velocity of waves in a ripple tank is 20 centimeters per second, and standing waves are produced with nodes spaced 3.0 centimeters apart. what is the frequency of the wave generator?

A sound that's produced by a single wave at a constant frequency and with no overtones is called

Which of the following is ignored when determining the relative mass of atoms? protons nucleus electrons. neutrons

Gamma radiation can be significantly reduced by ... A sheet of paper Air A 3 mm thickness of aluminium Several cm of lead

Why is it possible to remove a paper without moving the object on it. (apply newton's law)

If you had a trapped gas and continued to cool it until the lowest possible temperature is reached the temperature is called