| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 2.89 |
| Score | 0% | 58% |
The gravitational interaction of Earth and the Moon is responsible for which of these?
seasons |
|
day and night cycle |
|
the northern lights |
|
tides |
Tides are caused by the gravitational interaction of Earth and the Moon.
In the food chain, consumers are classified as which of the following?
all of these |
|
secondary |
|
primary |
|
tertiary |
Most animals consume other organisms to survive. Consumers (heterotrophs) are divided into three types, primary, secondary, and tertiary, based on their place in the food chain.
Neurons are part of the __________ nervous system.
central |
|
peripheral |
|
somatic |
|
autonomic |
The nervous system consists of the brain and spinal cord (central nervous system) and the peripheral nervous system which is the network of nerve cells (neurons) that collect and distribute signals from the central nervous system throughout the body.
Which of the following is metamorphic rock?
coal |
|
granite |
|
marble |
|
obsidian |
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.
The two heart chambers that collect blood are called:
valves |
|
ventricles |
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aorta |
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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.