| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.38 |
| Score | 0% | 68% |
Respiration is the process by which __________ absorb oxygen and eliminate carbon dioxide.
diaphragms |
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blood cells |
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bronchioles |
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capillaries |
The respiratory system manages respiration which is the process by which blood cells absorb oxygen and eliminate carbon dioxide.
The energy posessed by a thrown baseball is an example of what kind of energy?
transitional |
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potential |
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kinetic |
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gravitational |
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.
The pitch of the siren of an approaching ambulance changes as it approaches you. This is an example of which of the following?
Doppler effect |
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reflection |
|
sound radiation |
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refraction |
The Doppler effect occurs when the source or listener (or both) of sound waves is moving. If they're moving closer together, the listener perceives the sound with a higher pitch and, when they're moving apart, the listener perceives the sound with a lower pitch.
The energy posessed by a ball on the window ledge of a tall building is an example of what kind of energy?
kinetic |
|
inherent |
|
gravitational |
|
potential |
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.
Which of the following is the correct order for types of radiation from lowest to highest frequency?
microwaves → radio waves → visible light |
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radio waves → visible light → gamma rays |
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infrared waves → microwaves → ultraviolet light |
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visible light → ultraviolet light → radio waves |
The electromagnetic spectrum covers all possible wavelengths and frequencies of radiation. From lowest frequency (longest wavelength) to highest frequency (shortest wavelength) radiation: radio waves → microwaves → infrared waves → visible light → ultraviolet light → X-rays → gamma rays.