Term
| What causes day and night? |
|
Definition
| Rotation of the Earth on its axis |
|
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Term
| How does the Sun appear to move in the sky in the course of a day? |
|
Definition
| East to West because of Earth's rotation |
|
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Term
| What time of day does the Sun transit the meridian? |
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Definition
|
|
Term
| What happens to the Earth in one year? |
|
Definition
| It orbits the Sun one time. |
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Term
|
Definition
| Tilt of the Earthʼs axis (not changing distance from Sun). |
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Term
How is the Earth's axis tilted when we have summer in the Northern hemisphere? |
|
Definition
| With the North pole toward the Sun |
|
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Term
| What season is it in the Southern hemisphere when it is summer in the Northern hemisphere? |
|
Definition
winter
- Winter begins Dec. 21 = nights longer than days
- Spring begins March 21 = days and nights equal length - Summer begins June 21 = days longer than nights
- Fall begins Sept. 21 = days and nights equal length
Seasons would not happen if the Earth's axis were not tilted. |
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|
Term
| What happens to the moon in 1 month? |
|
Definition
| It moves once around the Earth. |
|
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Term
| What causes the phases of the Moon? |
|
Definition
Sun is lighting different fractions of the part of the Moon that we
see. |
|
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Term
| What is the order of the phases of the Moon? |
|
Definition
| New - First Quarter - Full - Third Quarter - New |
|
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Term
| When is the full moon visible? |
|
Definition
|
|
Term
| When is the new moon visible? |
|
Definition
| The new moon is visible during the day and sets at sunset. |
|
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Term
| How are the Sun, Earth, and Moon positioned when it is new Moon? |
|
Definition
|
|
Term
|
Definition
| Moon blocking the Sun's light. |
|
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Term
| How are the Sun, Earth, and Moon positioned when it is a solar eclipse? |
|
Definition
|
|
Term
|
Definition
| Earth's shadow on the Moon |
|
|
Term
| How are the Sun, Earth, and Moon positioned when it is a lunar eclipse and what phase is the Moon in? |
|
Definition
|
|
Term
| Why don't eclipses occur every month on Earth? |
|
Definition
The Moon orbits the Earth in a different plane than
the Earth orbits the Sun. |
|
|
Term
| Compare the frequency of an X–ray with that of visible light: |
|
Definition
| The X–ray has a larger frequency than visible light. |
|
|
Term
| A solar eclipse can occur |
|
Definition
|
|
Term
| How do the stars move over the course of a night (as they appear to us)? |
|
Definition
|
|
Term
| Eclipses are rare because: |
|
Definition
| the orbital planes of the Moon and of the Earth are different |
|
|
Term
| What Moon phase cannot be seen at midnight? |
|
Definition
|
|
Term
How long would one need to observe a star on a 10 meter telescope to collect the same
amount of light as one collects in one hour on a 5 meter telescope? |
|
Definition
|
|
Term
| If you view a hot star through a cool cloud of gas, what sort of spectrum will you see? |
|
Definition
|
|
Term
| A mountain top is a good location for optical and infrared telescopes because the site |
|
Definition
| is above much of the atmosphere |
|
|
Term
| How is the angular resolution of a telescope defined? |
|
Definition
| its ability to see detail in an object |
|
|
Term
If a planet with half the mass of Earth was in Earth’s orbit around the Sun, how would
the force between that planet and the Sun compare to the force between the Earth and
the Sun? |
|
Definition
| the force between the new planet and the Sun would be half as much |
|
|
Term
| Which one of the following is true? |
|
Definition
| Infrared radiation has a longer wavelength than blue light. |
|
|
Term
| An emission line is produced when: |
|
Definition
| an electron passes from a higher to a lower energy level. |
|
|
Term
TRUE OR FALSE?
An absorption spectrum appears as a continuous spectrum interrupted by a series of
dark lines. |
|
Definition
|
|
Term
|
Definition
| the motion of the planets changing from east to west to west to east and back |
|
|
Term
What is emitted from an atom when one of its electrons makes a transition from a higher
energy state to a lower energy state? |
|
Definition
|
|
Term
| Radio waves can travel large distances without interference because: |
|
Definition
| they have a longer wavelength than visible light |
|
|
Term
If the Earth’s North polar axis always tilted 23.5 degrees toward the Sun, but the Earth
was still rotating about this axis once each day: |
|
Definition
| it would always be winter in the Southern hemispher |
|
|
Term
|
Definition
| the rotation of the Earth |
|
|
Term
| What is the relationship between wavelength and frequency? |
|
Definition
| If the frequency increases the wavelength decreases. |
|
|
Term
| During a full Moon, where is the Moon relative to the Sun and the Earth? |
|
Definition
| on the opposite side of the Earth from the Sun |
|
|
Term
| If the Moon is full on Jan. 10, when is the next time we will see a new moon? |
|
Definition
|
|
Term
| When is the summer solstice in the Southern hemisphere? |
|
Definition
|
|
Term
| As compared to a cool star, a hotter star emits: |
|
Definition
| shorter wavelength, higher frequency, bluer color. |
|
|
Term
| The glowing embers of a fire are emitting most of their energy in the |
|
Definition
|
|
Term
The distance between two massive objects quadruples. By what factor is the gravitational
force between them changed? |
|
Definition
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