| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.58 |
| Score | 0% | 72% |
"An object at rest stays at rest and an object in motion stays in motion with the same speed and in the same direction unless acted upon by an unbalanced force." This describes which of Newton's laws of motion?
third |
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first |
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fourth |
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second |
Also known as the law of inertia, Newton's first law of motion states that An object at rest stays at rest and an object in motion stays in motion with the same speed and in the same direction unless acted upon by an unbalanced force.
In the food chain, omnivores may be which of the following?
secondary or tertiary consumers |
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primary or secondary consumers |
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primary or tertiary consumers |
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secondary consumers or scavengers |
Secondary or tertiary consumers may be omnivores.
The four planets closest to the Sun are called terrestrial. What does terrestrial mean?
the planets have water |
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the planets have moons |
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the planets are Earth-like |
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the planets have magnetic fields |
The four planets closest to the Sun (Mercury, Venus, Earth, and Mars) are called terrestrial (Earth-like) planets because, like the Earth, they're solid with inner metal cores covered by rocky surfaces.
The brain and spinal cord make up the __________ nervous system.
central |
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peripheral |
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autonomic |
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somatic |
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.
The respiratory and circulatory systems are similar in that they:
transport nutrients |
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add carbon dioxide |
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deoxygenate blood |
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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.