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Sample Practice Test Questions
The crust and lithosphere of the Earth is made up of which of the following?
plates
The crust and the rigid lithosphere (upper mantle) is made up approximately thirty separate plates. These plates more very slowly on the slightly more liquid mantle (asthenosphere) beneath them. This movement has resulted in continental drift which is the gradual movement of land masses across Earth's surface. Continental drift is a very slow process, occurring over hundreds of millions of years.
What function does a two-stroke cycle engine perform on the second stroke?
combustion and exhaust
The two strokes of a two-stroke cycle engine are fuel intake and compression then combustion and exhaust.
1
What is the potential difference in an electrical circuit a measure of?
the voltage at a specific location in the circuit
Electrons flow from an area of high concentration to an area of low concentration. A high voltage indicates a high concentration of electrons that creates a greater potential for electron flow than a low voltage. When applied to a load, voltage creates electricity and potential difference is the measure of voltage at a specific location in an electrical circuit.
The energy posessed by a ball on the window ledge of a tall building is an example of what kind of energy?
potential
Kinetic energy is the energy posessed by a moving object. Potential energy is stored energy in a stationary object based on its location, position, shape, or state.
Which of these is not a function of bone in the human skeletal system?
store vitamins
Hard bones provide primary support for the endoskeleton while more flexible cartilage is found at the end of all bones, at the joints, and in the nose and ears. In addition to providing support and protecting bodily organs, bones also produce blood cells and store minerals like calcium.
Solve for y:
y2 - 5y - 6 = 0
The first step to solve a quadratic equation that's set to zero is to factor the quadratic equation:
y2 - 5y - 6 = 0
(y + 1)(y - 6) = 0
For this expression to be true, the left side of the expression must equal zero. Therefore, either (y + 1) or (y - 6) must equal zero:
If (y + 1) = 0, y must equal -1
If (y - 6) = 0, y must equal 6
So the solution is that y = -1 or 6
Tertiary consumers eat which of the following?
primary and secondary consumers
Tertiary consumers eat primary consumers and secondary consumers and are typically carnivorous predators. Tertiary consumers may also be omnivores. Examples include wolves, sharks, and human beings.