| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.42 |
| Score | 0% | 68% |
The angle of reflection is equal to which the following?
focal point |
|
90° |
|
refractive index |
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angle of incidence |
The law of reflection specifies how waves, including light waves, bounce off of surfaces. Specifically, the angle of incidence of the approaching wave is equal to the angle of reflection of the reflected wave as measured from a line perpendicular (90°) to the surface.
In cell biology, cytokinesis results in two separate:
chromosomes |
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chromatids |
|
cells |
|
nuclei |
During cell division, the cytokinesis phase occurs when cytoplasm and cell membranes complete their separation resulting in two separate cells.
The energy posessed by a thrown baseball is an example of what kind of energy?
gravitational |
|
potential |
|
transitional |
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kinetic |
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 blood component fights infection?
white blood cells |
|
plasma |
|
platelets |
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red blood cells |
Blood is created in bone marrow and is made up of cells suspended in liquid plasma. Red blood cells carry oxygen, white blood cells fight infection, and platelets are cell fragments that allow blood to clot.
Which of the following states of matter exists at the highest temperature?
gas |
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liquid |
|
none of these |
|
solid |
Solids exist at a lower temperature than liquids which exist at a lower temperature than gases.