| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.25 |
| Score | 0% | 65% |
The brain and spinal cord make up the __________ nervous system.
somatic |
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central |
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peripheral |
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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 the formula for work?
\(W = \vec{F}\vec{d}\) |
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\(W = {F}{d}\) |
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\(W = {\vec{F} \over \vec{d} }\) |
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\(W = {{F}\over{d}}\) |
Work is performed on an object when an applied force causes displacement along the same vector. Measured in joules (J) or newton-meter (Nm), work is calculated by multiplying force times displacement: \(W = \vec{F}\vec{d}\)
Which of these layers is found directly below the Earth's crust?
continents |
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outer core |
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inner core |
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mantle |
The crust is the Earth's outermost layer and is divided into oceanic and continental types. Oceanic crust is 3 miles (5 km) to 6 miles (10 km) thick and is composed primarily of denser rock. Continental crust is 20 to 30 miles (30 to 50 km) thick and composed primarily of less dense rock. The crust makes up approximately one percent of the Earth's total volume.
What part of the brain is responsible for the major senses (thinking, hearing, seeing)?
brainstem |
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cerebellum |
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cerebrum |
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medulla |
The cerebrum is the major part of the brain and is responsible for the main senses (thinking, hearing, seeing).
The transfer of heat by the circulation or movement of the heated parts of a liquid or gas is called:
radiation |
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convection |
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conduction |
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diffusion |
Convection is the transfer of heat by the circulation or movement of the heated parts of a liquid or gas. Examples of heat transfer by convection include water coming to a boil on a stove, ice melting, and steam from a cup of coffee.