| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.51 |
| Score | 0% | 70% |
The dwarf planet Pluto is located where?
in the asteroid belt |
|
outside the solar system |
|
between the orbits of Jupiter and Saturn |
|
in the Kuiper Belt |
The Kuiper Belt is similar to the asteroid belt but much larger. Extending beyond the orbit of Neptune, it contains objects composed mostly of frozen methane, ammonia, and water. Most notably, the Kuiper Belt is home to Pluto, a dwarf planet that, until a 2006 reclassification, was considered the ninth planet of the solar system.
Meteoroids, meteors and meteorites are categorized based on which of the following?
their density |
|
their temperature |
|
their size |
|
their location |
Smaller rocks shed by asteroids and comets are called meteoroids. When these rocks reach Earth's atmosphere, they burn up in the mesosphere and become meteors. If a meteor manages to reach the Earth, it is called a meteorite.
Earth's troposphere layer is which of the following?
closest to the surface |
|
hottest |
|
coldest |
|
farthest from the surface |
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.
Carbohydrates are found in:
sugars and starches |
|
animal sources |
|
vegetable oils |
|
food additives |
Carbohydrates are major sources of energy for the body and are found in sugars (fruit, cane sugar, beets) and starches (bread, rice, potatoes, pasta).
Molecules and atoms that are inputs to a chemical reaction are known as which of the following?
reactants |
|
products |
|
components |
|
fuel |
During a chemical reaction molecules and atoms (reactants) are rearranged into new combinations that result in new kinds of atoms or molecules (products).