| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.42 |
| Score | 0% | 68% |
Which of the following states of matter exists at the lowest temperature?
liquid |
|
none of these |
|
solid |
|
gas |
Solids exist at a lower temperature than liquids which exist at a lower temperature than gases.
Which of Earth's layers has weather?
stratosphere |
|
thermosphere |
|
mesosphere |
|
troposphere |
The Earth's atmosphere has several layers starting with the troposphere which is closest in proximity to the surface. Containing most of the Earth's breathable air (oxygen and nitrogen), it's a region with warmer temperatures closer to the surface and cooler temperatures farther away which results in the rising and falling air that generates weather.
When light travels between two substances it bends. This is called:
refraction |
|
conduction |
|
reflection |
|
convection |
Because different materials have different refractive indices, light changes speed when passing from one material to another. This causes the light to bend (refraction) at an angle that depends on the change in refractive index between the materials. The greater the difference, the higher the angle of refraction.
__________ is caused by a lack of Vitamin C.
anemia |
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shingles |
|
diabetes |
|
scurvy |
Scurvy is a difficiency disease caused by a lack of Vitamin C in the diet.
Which of these layers is found directly below the Earth's crust?
continents |
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inner core |
|
outer core |
|
mantle |
The crust is the Earth's outermost layer and is divided into oceanic and continental types. Oceanic crust is 3 miles (5 km) to 6 miles (10 km) thick and is composed primarily of denser rock. Continental crust is 20 to 30 miles (30 to 50 km) thick and composed primarily of less dense rock. The crust makes up approximately one percent of the Earth's total volume.