Weather and seasons (Difficult) Quiz Home › IELTS › IELTS English Vocabulary › Weather and seasons (Difficult) 📝 IELTS – English Vocabulary – Weather and seasons – Difficult 20 questions · 15 min timer · Explanations included · Free 1. What does the term 'isobar' refer to on a weather map? Lines connecting points of equal atmospheric pressure Lines connecting points of equal wind speed Lines connecting points of equal temperature Lines connecting points of equal humidity None Show Hint Isobars are lines on a weather map connecting points of equal atmospheric pressure. They do not connect points of temperature (A), humidity (C), or wind speed (D). 2. Which of the following best describes 'frost'? A heavy downpour of rain A sudden increase in temperature A type of cloud formation A layer of ice crystals forming on surfaces when the temperature drops below freezing None Show Hint Frost is a layer of ice crystals that forms on surfaces when the temperature drops below freezing. It is not a temperature increase (B), rain (C), or cloud formation (D). Loading questions... Loading questions... Loading questions... Loading questions... Loading questions... Loading questions... Loading questions... Loading questions... Loading questions... Loading questions... Loading questions... Loading questions... Loading questions... Loading questions... Loading questions... Loading questions... Loading questions... Loading questions... Click Submit to see your final score! Previous Start Quiz Next Time's up