| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.11 |
| Score | 0% | 62% |
Which of the following states of matter exists at the lowest temperature?
gas |
|
none of these |
|
liquid |
|
solid |
Solids exist at a lower temperature than liquids which exist at a lower temperature than gases.
The connective tissue that connects bones to other bones at joints is called:
cartilage |
|
knuckles |
|
tendons |
|
ligaments |
Tough fibrous cords of connective tissue called tendons connect muscles to the skeleton while another type of connective tissue called ligaments connect bones to other bones at joints (elbow, knee, fingers, spinal column).
Water has a refractive index of 1.33. Which of the following is true?
light travels 1.33 times slower in a vacuum than it does in water |
|
light is 1.33 times brighter in a vacuum than it is in water |
|
light is 1.33 times dimmer in a vacuum than it is in water |
|
light travels 1.33 times faster in a vacuum than it does in water |
The speed of light varies based on the material that the waves are passing through. The refractive index of a material indicates how easily light travels through it compared to how easily light travels through a vacuum. For example, the refractive index of water is 1.33, meaning that light travels 1.33 times faster in a vacuum than it does in water.
During digestion, after proteins are broken down where does the undigested food go next?
stomach |
|
esophagus |
|
small intestine |
|
large intestine |
Food is mixed with gastric acid and pepsin in the stomach to help break down protein.
Which part of the respiratory system helps protect against infection?
epiglottis |
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nasal cavity |
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trachea |
|
pharynx |
After air enters through the nose, it passes through the nasal cavity which filters, moistens, and warms it. Further filtering takes place in the pharynx, which also helps protect against infection, and then in the trachea which is just past the epiglottis, responsible for preventing food from entering the airway.