| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.19 |
| Score | 0% | 64% |
The energy posessed by a thrown baseball is an example of what kind of energy?
gravitational |
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kinetic |
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potential |
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transitional |
Kinetic energy is the energy posessed by a moving object. Potential energy is stored energy in a stationary object based on its location, position, shape, or state.
An electrically charged atom is a(n):
electron |
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ion |
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proton |
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neutron |
A compound is a substance containing two or more different chemical elements bound together by a chemical bond. In ionic compounds, one atom borrows an electron from another atom resulting in two ions (electrically charged atoms) of opposite polarities that then become bonded electrostatically.
Which of the following is not a characteristic of the Sun?
makes up over 99% of the mass of the solar system |
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formed 2.6 billion years ago |
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is composed of hydrogen and helium |
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is a yellow dwarf star |
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.
Herbivores are __________ that subsist on producers like plants and fungus.
scavengers |
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secondary consumers |
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tertiary consumers |
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primary consumers |
Primary consumers (herbivores) subsist on producers like plants and fungus. Examples are grasshoppers, cows, and plankton.
Blood is created in:
red blood cells |
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the heart |
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bone marrow |
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the liver |
Blood is created in bone marrow and is made up of cells suspended in liquid plasma. Red blood cells carry oxygen, white blood cells fight infection, and platelets are cell fragments that allow blood to clot.