Booklet Flashcards
What can a lens be used for?
To produce a clear image of a distant object on a screen
The image produced is real because it is …
On a screen
Describe how to measure the focal length of the lens
Measure the distance between the lens and the screen when the image is sharp and clear
Explain what the eyepiece lens does
Magnifies the image and refracts the light
The light that travels from stars transfers …
Energy
A scientist is standing a long way from the explosion.
Explain why he hears the explosion a few seconds after he sees it
Sound travels faster than light so we see it then hear it
The size of the image is what the distant object?
Smaller than
The type of the image formed on the screen is …. Image
Real
A satellite orbits the moon.
Radio waves from the satellite transfer what?
Energy and information
