| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.00 |
| Score | 0% | 60% |
The ovum and oviduct are part of which bodily system?
circulatory |
|
reproductive |
|
nervous |
|
digestive |
Approximately every 28 days during female ovulation an egg (ovum) is released from one of the ovaries and travels through the oviduct (fallopian tube) and into the uterus. At the same time, the endometrial lining of the uterus becomes prepared for implantation.
Which of the following is not a characteristic of the Sun?
is a yellow dwarf star |
|
makes up over 99% of the mass of the solar system |
|
formed 2.6 billion years ago |
|
is composed of hydrogen and helium |
The Sun is a G-type main-sequence star (G2V) but is informally known as a yellow dwarf star. Composed of 73% hydrogen and 25% helium, the hot plasma that makes up the Sun reaches 9,900°F (5,505°C) at the surface. It formed approximately 4.6 billion years ago and makes up 99.86% of the mass in the solar system.
What part of the brain is responsible for the major senses (thinking, hearing, seeing)?
cerebrum |
|
brainstem |
|
cerebellum |
|
medulla |
The cerebrum is the major part of the brain and is responsible for the main senses (thinking, hearing, seeing).
Which of the following describes the Earth's outer core?
liquid |
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solid |
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makes up most of the Earth's volume |
|
primarily solid |
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 two heart chambers that collect blood are called:
ventricles |
|
aorta |
|
valves |
|
atria |
The heart is the organ that drives the circulatory system. In humans, it consists of four chambers with two that collect blood called atria and two that pump blood called ventricles. The heart's valves prevent blood pumped out of the ventricles from flowing back into the heart.