A Paper Bridge Between Two Books: Spanish B1
Read a B1 Spanish experiment about testing flat and folded paper bridges with coins.
Un puente de papel entre dos libros
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About this article
What you'll learn
bridge experiment vocabulary, comparison language, compression and tension, present perfect, subjunctive and conditional
A paper bridge experiment shows how changing shape can change resistance while the material and test conditions stay the same.
After reading
Article learning block
Phrases, words, grammar, and quick practice from this text.
Phrases for training
Add useful phrases to SRS or mark them as already known.
el punto de partida
newthe starting point
The place or state from which a process begins.
Useful for describing the first stage of an experiment.
del mismo tamaño
newthe same size
Used for objects that have equal dimensions.
Useful for explaining a fair comparison.
de una en una
newone at a time
The action is done with one object at a time.
Useful for describing a controlled test.
bajo compresión
newunder compression
The material is subject to forces that squeeze it.
Useful for understanding forces in a beam.
después de la primera prueba
newafter the first test
It marks the time following the initial test.
Useful for ordering stages of work.
Key words
Vocabulary that carries the school-day topic.
Challenge
reto
challenge
A difficult goal or problem to solve.
Useful for projects and experiments.
Load
carga
load
A weight or force that a structure must support.
Essential for talking about bridges.
Bends
se curva
bends
It takes a curved shape under a force.
Useful for describing material behaviour.
Folds
pliegues
folds
Lines and shapes made by folding a material.
Useful for paper structures.
Strength
resistencia
strength
The ability of a material or structure to resist a load.
Useful for comparing designs.
Grammar in context
Patterns from the text worth noticing after reading.
Subjunctive for a desired feature
que sostenga una carga
that can support a load
The subjunctive follows an indefinite bridge because it is a desired bridge not yet identified.
Useful for describing something you are looking for.
Saying something is unnecessary
No hace falta pegamento
Glue is not needed
No hace falta plus a noun says that the thing is not necessary.
Useful for saying what you can do without.
Present perfect
El material no ha cambiado
The material has not changed
Ha cambiado links an earlier change to the present result, while no negates that change.
Useful for comparing a state before and after an action.
Hacer que plus subjunctive
hacen que la hoja sea
make the sheet become
Sea follows hacen que because the structure presents a caused result.
Useful for explaining how one thing affects another.
Conditional for an imagined choice
¿Qué forma probarías tú?
What shape would you test?
Probarías presents the action as a possible choice in an imagined situation.
Useful for discussing possible solutions.
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