A hypothesis that has been repeatedly and rigorously tested and supported is known as a:
a. model
b. testable prediction
c. scientific method
d. scientific theory
e. result
d
You might also like to view...
The number of cycles of a periodic wave passing a point in space per second is called the ________ of the wave.
Fill in the blank(s) with the appropriate word(s).
A parent pushes a small child on a swing so that the child moves rapidly away while the parent remains at rest. How does the magnitude of the force that the child exerts on the parent compare to the magnitude of the force that the parent exerts on the child?
A. The force on the child is larger in magnitude. B. The force on the parent is larger in magnitude. C. These forces have equal magnitudes. D.The child exerts zero force on the parent. E.There is no way to tell.
A system consisting of a negatively-charged particle and an electric field
A. gains potential difference and kinetic energy when the charged particle moves in the direction of the field. B. loses electric potential energy when the charged particle moves in the direction of the field. C. gains kinetic energy when the charged particle moves in the direction of the field. D. gains electric potential energy when the charged particle moves in the direction of the field. E. gains potential difference and electric potential energy when the charged particle moves in the direction of the field.
What is one atomic mass unit?
a. The mass of a hydrogen atom at the Earth's surface. b. The mass of an oxygen atom in outer space. c. The mass of a carbon atom. d. One-twelfth of a carbon atom. e. One-twentieth the mass of a uranium atom.