The "pressure for response", which can take the form of a challenge, a surprise, a time restraint or the suspense of not knowing. Tension is what works in a drama to impel students to respond and take action and what works in a play to make the audience want to know what happens next.
TENSION
Русско-английский перевод TENSION
Русско-английский электронный словарь Edic. Russian-English dictionary Edic. 2012