Why is it incorrect to describe the moon as luminous
🔄 Click to see definition
Definition1/12
The Moon is NOT "luminous"; it does not shine with its own light. The light we see coming from the Moon is reflected sunlight.
On a related note, astronauts on the Moon have always landed during the lunar "day", which lasts for 14 days. But because the dark areas of the near side of the Moon are at the "full Earth", it will probably never be entirely dark. As the Earth is so much larger than the Moon, the reflected earthshine will be 5 to 10 times brighter than moonlight. Astronauts will probably have no trouble working by earthlight.
For A+ the answer is The moon does not produce light. By definition, "luminous" means "giving off light". The moon has no light of it's own. It shines by reflected sunlight.
🔄 Click to see term
Term1/12
Which factor most influences the image produced by reflection of an object in a concave mirror
🔄 Click to see definition
Definition1/12
distance from mirror
🔄 Click to see term
Term1/12
Which material lines the tubes of fluorescent lights and glows when exposed to UV light
🔄 Click to see definition
Definition1/12
Phosphor.
🔄 Click to see term
Term1/12
Which term indicates the imaginary line that extends straight out from the center of a reflective surface
🔄 Click to see definition
Definition1/12
The imaginary line that extends straight out from the center of
a reflective surface is the optical axis.
🔄 Click to see term
Term1/12
Which of the following is true of a real image
🔄 Click to see definition
Definition1/12
it can be projected
🔄 Click to see term
Term1/12
Which term is used to describe objects that are visible because of reflected light
🔄 Click to see definition
Definition1/12
illuminated
Thats the right answer for a plus.
🔄 Click to see term
Term1/12
V-cube 7 or megaminx
🔄 Click to see definition
Definition1/12
megaminx
🔄 Click to see term
Term1/12
What is true about convex mirrors
🔄 Click to see definition
Definition1/12
Convex mirrors project a hemispherical surface
🔄 Click to see term
Term1/12
Which of the following is true of sound waves
🔄 Click to see definition
Definition1/12
sound waves require a medium to transfer energy
FOR A+ USERS THE ANSWER IS Sound waves travel in all directions sound waves require a medium to transfer energy
-- They are longitudinal waves and material medium is required for their propagation.
🔄 Click to see term
Term1/12
What type of device is used to increase or decrease the voltage of an electric current
🔄 Click to see definition
Definition1/12
The device is called a "variac' and it is a type of transformer. It has a variable voltage ouput.
🔄 Click to see term
Term1/12
Which type of technology predates most of our knowledge of basic science
🔄 Click to see definition
Definition1/12
electricity
🔄 Click to see term
Term1/12
Which of these statements about the EM spectrum is false
🔄 Click to see definition
Definition1/12
most of the EM spectrum is visible light.
🔄 Click to see term
🥳
Great job!
You studied all the cards in this guide.
Rate this guide:
☆★☆★☆★☆★☆★
Start overPrint
Full screen
Rate this Study Guide:
☆★☆★☆★☆★☆★
Cards in this guide (12)
Why is it incorrect to describe the moon as luminous
The Moon is NOT "luminous"; it does not shine with its own light. The light we see coming from the Moon is reflected sunlight.
On a related note, astronauts on the Moon have always landed during the lunar "day", which lasts for 14 days. But because the dark areas of the near side of the Moon are at the "full Earth", it will probably never be entirely dark. As the Earth is so much larger than the Moon, the reflected earthshine will be 5 to 10 times brighter than moonlight. Astronauts will probably have no trouble working by earthlight.
For A+ the answer is The moon does not produce light. By definition, "luminous" means "giving off light". The moon has no light of it's own. It shines by reflected sunlight.
Which factor most influences the image produced by reflection of an object in a concave mirror
distance from mirror
Which material lines the tubes of fluorescent lights and glows when exposed to UV light
Phosphor.
Which term indicates the imaginary line that extends straight out from the center of a reflective surface
The imaginary line that extends straight out from the center of
a reflective surface is the optical axis.
Which of the following is true of a real image
it can be projected
Which term is used to describe objects that are visible because of reflected light
illuminated
Thats the right answer for a plus.
V-cube 7 or megaminx
megaminx
What is true about convex mirrors
Convex mirrors project a hemispherical surface
Which of the following is true of sound waves
sound waves require a medium to transfer energy
FOR A+ USERS THE ANSWER IS Sound waves travel in all directions sound waves require a medium to transfer energy
-- They are longitudinal waves and material medium is required for their propagation.
What type of device is used to increase or decrease the voltage of an electric current
The device is called a "variac' and it is a type of transformer. It has a variable voltage ouput.
Which type of technology predates most of our knowledge of basic science
electricity
Which of these statements about the EM spectrum is false