A) Gravity B) Temperature C) Surface tension D) Air pressure
A) Soap film B) Water vapor C) Air D) Sugar solution
A) They form a larger bubble B) They disappear C) They create a solid D) They pop immediately
A) It's lower than the outside pressure B) It's higher than the outside pressure C) It's equal to the outside pressure D) It's zero
A) Foam insulation B) Cooking C) Concrete mixing D) Metal casting
A) Helium B) Carbon dioxide C) Hydrogen D) Air
A) It expands and can pop B) It turns solid C) It shrinks and becomes denser D) It stays the same size
A) It shrinks without breaking B) It instantly turns solid C) It expands further D) The film breaks and the air escapes
A) By altering density B) By increasing viscosity C) By adding weight D) By disrupting hydrogen bonds |