| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.45 |
| Score | 0% | 69% |
Which of these foods should a person with high cholesterol avoid?
eggs |
|
vegetable oils |
|
avocados |
|
olive oil |
Fats come in three types, saturated (meats, shellfish, eggs, milk), monounsaturated (olives, almonds, avocados), and polyunsaturated (vegetable oils). Saturated fats can raise LDL ("bad") cholesterol while unsaturated fats can decrease it.
Water freezing or boiling is an example of which of the following?
cooling |
|
sublimation |
|
heating |
|
phase transition |
A substance undergoes a phase transition when it moves from one state of matter to another, for example, when water freezes or boils.
Which of these is matter than cannot be separated into different types of matter by ordinary chemical methods?
atom |
|
element |
|
molecule |
|
compound |
An element is matter than cannot be separated into different types of matter by ordinary chemical methods.
When two air masses meet and neither is displaced, what kind of front is present?
warm |
|
occluded |
|
cold |
|
stationary |
When two air masses meet and neither is displaced, a stationary front is created. Stationary fronts often cause persistent cloudy wet weather.
An air mass is a large body of air that has which of the following characteristics?
all of these |
|
similar temperature |
|
similar moisture |
|
similar density |
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.