Satelites Flashcards

(26 cards)

1
Q

What is a satellite?

A

A satellite is an object that orbits around a planet or another celestial body.

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2
Q

True or False: The Moon is Earth’s only natural satellite.

A

True

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3
Q

Fill in the blank: A satellite that orbits Earth at a distance of approximately 36,000 kilometers is called a _____ satellite.

A

geostationary

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4
Q

What is the primary function of communication satellites?

A

To relay communication signals such as television, internet, and radio.

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5
Q

Which phase of the Moon occurs when it is completely illuminated from Earth’s perspective?

A

Full Moon

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6
Q

What are the four main phases of the Moon?

A

New Moon, First Quarter, Full Moon, Last Quarter

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7
Q

True or False: A satellite can be natural or artificial.

A

True

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8
Q

What is the term for the gravitational force that keeps satellites in orbit?

A

Gravity

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9
Q

What phase of the Moon is visible when it is half illuminated?

A

First Quarter or Last Quarter

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10
Q

Which type of satellite is used for weather monitoring?

A

Meteorological satellite

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11
Q

Fill in the blank: The time it takes for the Moon to complete one full orbit around Earth is about _____ days.

A

27.3

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12
Q

What is the phenomenon called when the Moon passes directly between the Earth and the Sun?

A

Solar Eclipse

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13
Q

True or False: The Moon’s phases are caused by its position relative to the Earth and the Sun.

A

True

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14
Q

What type of satellite is primarily used for GPS?

A

Navigation satellite

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15
Q

Name the phase of the Moon that occurs just before a New Moon.

A

Waxing Crescent

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16
Q

What is the main purpose of reconnaissance satellites?

A

To gather intelligence and monitor military activities.

17
Q

Fill in the blank: The last phase of the lunar cycle before the New Moon is called the _____.

A

Waning Crescent

18
Q

What is an artificial satellite?

A

A human-made object that is intentionally placed into orbit around a celestial body.

19
Q

True or False: The Moon has no atmosphere.

20
Q

What phase comes after a Full Moon?

A

Waning Gibbous

21
Q

What is the purpose of scientific satellites?

A

To conduct research and gather data about space and Earth.

22
Q

Which phase of the Moon is characterized by increasing illumination?

23
Q

Fill in the blank: The point in a satellite’s orbit closest to Earth is called _____ point.

24
Q

What is the term for the distance between a satellite and the center of the Earth?

A

Orbital radius

25
What is a lunar eclipse?
It occurs when the Earth passes between the Sun and the Moon, casting a shadow on the Moon.
26
Name one advantage of using satellites for communication.
They can provide coverage to remote areas where ground infrastructure is lacking.