| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.54 |
| Score | 0% | 71% |
__________ is caused by a lack of iron in the diet.
shingles |
|
scurvy |
|
diabetes |
|
anemia |
Anemia, which may cause weakness, dizziness, and headaches is caused by a lack of iron in the diet.
A transition zone between two air masses is called:
boundary |
|
thunderstorm |
|
front |
|
fog |
An air mass is a large body of air that has similar moisture (density) and temperature characteristics. A front is a transition zone between two air masses.
The pitch of the siren of an approaching ambulance changes as it approaches you. This is an example of which of the following?
refraction |
|
sound radiation |
|
Doppler effect |
|
reflection |
The Doppler effect occurs when the source or listener (or both) of sound waves is moving. If they're moving closer together, the listener perceives the sound with a higher pitch and, when they're moving apart, the listener perceives the sound with a lower pitch.
An asteroid belt holds many of the asteroids in our solar system. It is located between the orbits of which planets?
Mercury and Venus |
|
Jupiter and Saturn |
|
Mars and Jupiter |
|
Mars and Earth |
The solar system also contains over a million rocky fragments of at least 1km in diameter called asteroids as well as millions more with smaller diameters. Many of these asteroids are an asteroid belt between the orbits of Mars and Jupiter.
Minerals, vitamins, and fiber are:
macronutrients |
|
micronutrients |
|
carbohydrates |
|
proteins |
Minterals, vitamins, and fiber are micronutrients while proteins, carbohydrates, and fats are macronutrients.