Angela Lock
FREE Resource
6 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
According to the passage, what is the primary purpose of the vacuum between the two walls of the flask?
To reflect heat waves back into the liquid.
To stop heat transfer through conduction and convection.
To make the flask lighter and easier to carry.
To provide a space for the silver coating.
Answer explanation
The passage explicitly states that the vacuum, which is an empty space, is the 'key to stopping conduction and convection' because there are very few particles to transfer the heat.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
When the author calls heat a 'restless traveler,' what main idea are they trying to convey?
That heat can only travel for short distances.
That heat is always trying to move from one place to another.
That heat gets tired after moving for a long time.
That traveling with hot items is difficult.
Answer explanation
This use of personification gives heat the human quality of being 'restless,' which helps explain the scientific concept that heat is constantly in motion, moving from warmer to cooler areas.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The passage describes the vacuum flask as a 'fortress against temperature change.' What is the main effect of using the word 'fortress'?
It suggests the flask is made of stone and is very heavy.
It implies that the flask is an old and outdated invention.
It creates a tone of strength and emphasizes the flask's effectiveness at defending against heat.
It suggests that the flask is mainly used by soldiers in battle.
Answer explanation
A fortress is a strong, defensive structure. By using this metaphor, the author emphasizes that the flask is powerful and effective at its job of 'guarding' the temperature and protecting its contents from outside temperatures.
4.
CATEGORIZE QUESTION
1 min • 1 pt
Sort the following parts or concepts from the passage based on the primary type of heat transfer they are designed to stop.
Groups:
(a) Stops Conduction & Convection
,
(b) Stops Radiation
Reflective inner coating
The gap with almost no air
Silvered, mirror-like surfaces
The vacuum
A tight-fitting stopper
The empty space between walls
Answer explanation
The passage explains that the vacuum (the empty space/gap) stops heat transfer by conduction and convection because there are no particles to carry the heat. The stopper also prevents convection. The text explicitly states that the silvered, reflective surfaces stop radiation.
5.
MATCH QUESTION
1 min • 1 pt
Match each figurative phrase from the passage to the scientific concept it helps explain.
The purpose of the silvered surfaces reflecting radiation
Empty moat
The function of the vacuum in blocking heat transfer
Mirrors for heat
A description of heat's tendency to always be moving
Invisible wall
A metaphor for the space that stops conduction and convection
Restless traveler
Answer explanation
'Restless traveler' describes heat's constant movement. 'Invisible wall' is a metaphor for how the vacuum blocks heat. 'Empty moat' is another metaphor for the vacuum, emphasizing how it stops conduction/convection. 'Mirrors for heat' describes how the silvered surfaces reflect radiation.
6.
OPEN ENDED QUESTION
3 mins • 1 pt
The author uses several examples of figurative language, such as calling the flask a 'fortress' and its silvered surfaces 'like mirrors for heat.' Analyze how the author's use of these comparisons helps make the scientific explanation of how a vacuum flask works easier for a reader to understand. Use at least two specific examples from the text to support your analysis.
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Answer explanation
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