| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.36 |
| Score | 0% | 67% |
Saturated fats can __________ LDL ("bad") cholesterol while unsaturated fats can __________ it.
decrease, raise |
|
decrease, stabilize |
|
stabilize, raise |
|
raise, decrease |
Saturated fats can raise LDL ("bad") cholesterol while unsaturated fats can decrease it.
Which of the following describes the Earth's outer core?
makes up most of the Earth's volume |
|
primarily solid |
|
solid |
|
liquid |
The Earth's core is divided into the liquid outer core (1,430 miles or 2,300 km radius) and the solid inner core (745 miles or 1,200 km radius).
The respiratory and circulatory systems are similar in that they:
add carbon dioxide |
|
transport nutrients |
|
deoxygenate blood |
|
transport oxygen |
Like the respiratory system, the circulatory system serves to transport oxygen throughout the body while removing carbon dioxide. In addition, the circulatory system transports nutrients from the digestive system.
Which of the following is metamorphic rock?
obsidian |
|
coal |
|
granite |
|
marble |
The Earth's rocks fall into three categories based on how they're formed. Igneous rock (granite, basalt, obsidian) is formed from the hardening of molten rock (lava), sedimentary rock (shale, sandstone, coal) is formed by the gradual despositing and cementing of rock and other debris, and metamorphic rock (marble, slate, quartzite) which is formed when existing rock is altered though pressure, temperature, or chemical processes.
Which of the following is not a method of heat transfer?
radiation |
|
conduction |
|
convection |
|
reflection |
Heat is always transferred from warmer to cooler environments through conduction, convection, or radiation.