7. Thermal energy is the

a material.

of the particles in

A. total energy

B. kinetic energy

C. temperature

D. potential energy

What is the main source of energy on earth?

Which statement best describes scientific theories? Scientific theories are based on facts that describe natural events. Scientific theories do not explain events that occur in the natural world, they describe them.

How can two objects have different mass and volume yet have the same density?

What building material did you use to build your house? Did your results support or fail to support your hypotheses?

What are three ways to speed up a reaction?

Which of these rocks are formed by volcanic activity? select the two correct answers. a. limestone b. granite c. marble d. basalt e. sandstone

Give a critical discussion on why hardness test needs to perform in engineering practice. b) Discuss 2 possible source of errors (other than parallax error) and how it's can effect the result.

Which of the following best describes what occurs in a fusion reaction?

The period of a wave is 10 seconds and it's wavelength is 2 meters. What is the wave's speed?

The vectors of the magnetic field around a long, straight, current-carrying wire are: A-concentric with the wire B-radial to the wire C-tangential to the wire D-parallel with the wire