PHYSICAL SCIENCE END YEAR EXAM REVISION
QUESTIONS. ALL EXAM REVISION QUESTIONS AND
CORRECT ANSWERS (ALREADY GRADED A+) (2024 UPDATE)
100% GUARANTEED
The sky appears to be blue because ______. - ANSWER- blue wavelengths are the most easily
scattered in the atmosphere
If white light falls on an object and the object reflects all wavelengths of light, the surface will
appear to be ______. - ANSWER- white
Interference in waves is the ______ together of two or more waves of the same kind that pass by
the same point and at the same time. - ANSWER- adding
When two waves meet, the amplitude of the new wave is the ______. - ANSWER- algebraic
sum of the amplitude of the two separate wave patterns
The sky can appear red or reddish at sunrise or sunset because the ______. - ANSWER- light
must travel farther in the atmosphere and the blue light is scattered out more completely
If waves traveling in opposite directions meet and a wave crest from each meets at the same place
and at the same time, the result is ______. - ANSWER- constructive interference
Soap bubbles and thin oil films can appear ______ because their surface has varying thicknesses
which cause constructive and destructive interference of different wavelengths of light in various
areas. - ANSWER- brightly colored
, The adding together of two or more waves of the same kind that pass the same point at the same
time is called ______. - ANSWER- interference
Diffraction is the ability all waves have to ______. - ANSWER- bend around the edge of an
obstacle in their path
If two waves meet, the sum of the two separate ____________determines the resulting wave's
amplitude. - ANSWER- amplitudes
If two waves meet and are in step with each other, the result is ____________; if two waves meet
and are out of step with each other, the result is _____________interference. - ANSWER-
Blank 1: constructive
Blank 2: destructive
Which of the following items are used on optical instruments in order to cut down on the reflection
of light at the interface of the air and glass by using destructive interference? - ANSWER-
Coated lenses
The diffraction of light waves around an object ______. - ANSWER- keeps shadow from being
completely dark
Thin films (such as those of soap bubbles and thin oil films) can appear brightly colored because
______. - ANSWER- their varying thicknesses cause constructive and destructive interference
of different wavelengths of light in various areas
The ability of all waves to bend around the edge of an obstacle in their path is called ______. -
ANSWER- diffraction
QUESTIONS. ALL EXAM REVISION QUESTIONS AND
CORRECT ANSWERS (ALREADY GRADED A+) (2024 UPDATE)
100% GUARANTEED
The sky appears to be blue because ______. - ANSWER- blue wavelengths are the most easily
scattered in the atmosphere
If white light falls on an object and the object reflects all wavelengths of light, the surface will
appear to be ______. - ANSWER- white
Interference in waves is the ______ together of two or more waves of the same kind that pass by
the same point and at the same time. - ANSWER- adding
When two waves meet, the amplitude of the new wave is the ______. - ANSWER- algebraic
sum of the amplitude of the two separate wave patterns
The sky can appear red or reddish at sunrise or sunset because the ______. - ANSWER- light
must travel farther in the atmosphere and the blue light is scattered out more completely
If waves traveling in opposite directions meet and a wave crest from each meets at the same place
and at the same time, the result is ______. - ANSWER- constructive interference
Soap bubbles and thin oil films can appear ______ because their surface has varying thicknesses
which cause constructive and destructive interference of different wavelengths of light in various
areas. - ANSWER- brightly colored
, The adding together of two or more waves of the same kind that pass the same point at the same
time is called ______. - ANSWER- interference
Diffraction is the ability all waves have to ______. - ANSWER- bend around the edge of an
obstacle in their path
If two waves meet, the sum of the two separate ____________determines the resulting wave's
amplitude. - ANSWER- amplitudes
If two waves meet and are in step with each other, the result is ____________; if two waves meet
and are out of step with each other, the result is _____________interference. - ANSWER-
Blank 1: constructive
Blank 2: destructive
Which of the following items are used on optical instruments in order to cut down on the reflection
of light at the interface of the air and glass by using destructive interference? - ANSWER-
Coated lenses
The diffraction of light waves around an object ______. - ANSWER- keeps shadow from being
completely dark
Thin films (such as those of soap bubbles and thin oil films) can appear brightly colored because
______. - ANSWER- their varying thicknesses cause constructive and destructive interference
of different wavelengths of light in various areas
The ability of all waves to bend around the edge of an obstacle in their path is called ______. -
ANSWER- diffraction
