Loading question...
You are in free guest mode. Timed Practice Revision List Attempt History Progress Tracking Create a free account to unlock these tools
Back to Questions
Prev Next
Practice Reading: Fill in the Blanks (Dropdown) ID: #5477 Light Energy
Instructions ›
Below is a text with blanks. Click on each blank, a list of choices will appear. Select the appropriate choice for each blank.
* Select the correct answer into all dropdown fields. You need to answer all questions before clicking verify button.
Light  is  usually    as  a  form  of  energy  and  it  is  indeed  a  kind  of  electromagnetic  energy,  not  much  different  from  radio  waves,  television  signals,  heat,  and  X-rays.  All  of  these  are  made  up  of  waves  that  spread,  bend,  interfere  with  one  another,  and    with  obstacles  in  their  path,  rather  like  waves  in  water.  A  physicist  might  tell  you  that  light,  along  with  all  its  electromagnetic  relatives,  is  really  a  form  of  matter,  little  different  from  more  substantial  matter  such  as  houses  and,  like  them,  it  is  made  up  of  individual  particles.  Light  particles,  called  photons,    in  streams,  similar  to  the  way  in  which  water  pours  through  a  hose.
To  most  people,  this  might  sound  paradoxical  or  illogical,  as  many  things  to  do  with  physics  seem  to  these  days.  How  can  light  be  both  energy  and  matter,  wave  and  particle?  The  reason  it  can  be  is,  in  fact,  not  at  all  :  all  energy  is  a  form  of  matter.  Almost  everybody  recognizes-  even  if  they  do  not  understand-  Einstein's  famous  equation,  E=mc  sq,  which  spells  it  out:  E  refers  to  energy  and  m  to  the  mass  of  matter.  Furthermore,  all  matter  has  some  of  the    of  waves  and  some  of  particles,  but  the  waves  of  such  solid-seeming  things  as  houses  are  not  discernable  and  can  generally  be  ignored  because  ordinary  matter  acts  as  if  it  were  made  up  of  particles.

Result:

AI explanationShows the answer. Tap to open.
Correct answer: described

Explanation: The word 'described' fits grammatically as it is in the past participle form, which is appropriate for the passive construction of the sentence. Contextually, it aligns with the idea of explaining light as a form of energy.

Meaning: 'Described' means to explain or give details about something.

Wrong options:

  • illustrated: 'Illustrated' implies using images or diagrams, which does not fit the context of explaining light as energy.
  • pictured: 'Pictured' suggests visual representation, which is not suitable for the abstract concept of light being a form of energy.
  • referred: 'Referred' indicates mentioning something without detailed explanation, which does not convey the necessary depth of understanding in this context.
Correct answer: react

Explanation: The word 'react' is appropriate as it indicates an interaction with obstacles, fitting grammatically and contextually within the sentence structure.

Meaning: 'React' means to respond or behave in a certain way when encountering something.

Wrong options:

  • crash: 'Crash' implies a violent impact, which does not accurately describe the interaction of waves with obstacles.
  • encounter: 'Encounter' suggests meeting or coming across something, but it does not convey the idea of interaction as effectively as 'react.'
  • collide: 'Collide' indicates a forceful impact, which is too strong for the context of how waves interact with obstacles.
Correct answer: travel

Explanation: The word 'travel' is in the correct form to indicate movement and fits grammatically and contextually, as it describes how light particles move.

Meaning: 'Travel' means to move from one place to another.

Wrong options:

  • journey: 'Journey' refers to the act of traveling but is a noun and does not fit grammatically in this context.
  • pour: 'Pour' implies a liquid flowing, which does not accurately describe the movement of light particles.
  • voyage: 'Voyage' is a noun that refers to a long journey, which does not fit the verb form needed in this sentence.
Correct answer: complicated

Explanation: The word 'complicated' fits grammatically as an adjective describing the nature of the concept, and contextually, it aligns with the idea that the relationship between light as energy and matter is not simple.

Meaning: 'Complicated' means something that is difficult to understand or involves many parts.

Wrong options:

  • sophisticated: 'Sophisticated' implies a high level of complexity or refinement, which does not convey the same meaning as 'complicated' in this context.
  • unknowable: 'Unknowable' suggests something that cannot be known, which does not accurately reflect the nature of the concept being discussed.
  • incomprehensible: 'Incomprehensible' means something that cannot be understood at all, which is too extreme for the context of explaining light.
Correct answer: characteristics

Explanation: The word 'characteristics' fits grammatically as a plural noun that describes features or qualities, aligning well with the context of discussing properties of matter.

Meaning: 'Characteristics' refers to the distinguishing traits or qualities of something.

Wrong options:

  • particulars: 'Particulars' refers to specific details, which does not fit the broader context of discussing features of waves and particles.
  • character: 'Character' refers to the nature or qualities of something but is singular and does not match the plural context needed here.
  • actions: 'Actions' implies behaviors or activities, which does not relate to the properties of waves and particles being discussed.

The rest of this explanation is for members. Sign in free to read why the other options are wrong, key words and tips.

Sign in to read the full explanation
PoS Classification

With a free account: Retry and compare every attempt.
Be the first! No community answers here yet. Submit yours and help others learn.
How difficult was this question?
Others found: 100% Easy · 0% Medium · 0% Hard
Saving...