Satelites Flashcards
(26 cards)
What is a satellite?
A satellite is an object that orbits around a planet or another celestial body.
True or False: The Moon is Earth’s only natural satellite.
True
Fill in the blank: A satellite that orbits Earth at a distance of approximately 36,000 kilometers is called a _____ satellite.
geostationary
What is the primary function of communication satellites?
To relay communication signals such as television, internet, and radio.
Which phase of the Moon occurs when it is completely illuminated from Earth’s perspective?
Full Moon
What are the four main phases of the Moon?
New Moon, First Quarter, Full Moon, Last Quarter
True or False: A satellite can be natural or artificial.
True
What is the term for the gravitational force that keeps satellites in orbit?
Gravity
What phase of the Moon is visible when it is half illuminated?
First Quarter or Last Quarter
Which type of satellite is used for weather monitoring?
Meteorological satellite
Fill in the blank: The time it takes for the Moon to complete one full orbit around Earth is about _____ days.
27.3
What is the phenomenon called when the Moon passes directly between the Earth and the Sun?
Solar Eclipse
True or False: The Moon’s phases are caused by its position relative to the Earth and the Sun.
True
What type of satellite is primarily used for GPS?
Navigation satellite
Name the phase of the Moon that occurs just before a New Moon.
Waxing Crescent
What is the main purpose of reconnaissance satellites?
To gather intelligence and monitor military activities.
Fill in the blank: The last phase of the lunar cycle before the New Moon is called the _____.
Waning Crescent
What is an artificial satellite?
A human-made object that is intentionally placed into orbit around a celestial body.
True or False: The Moon has no atmosphere.
True
What phase comes after a Full Moon?
Waning Gibbous
What is the purpose of scientific satellites?
To conduct research and gather data about space and Earth.
Which phase of the Moon is characterized by increasing illumination?
Waxing
Fill in the blank: The point in a satellite’s orbit closest to Earth is called _____ point.
perigee
What is the term for the distance between a satellite and the center of the Earth?
Orbital radius