Vacuum Vacuum 1 / 10 Which type of pressure is achieved in space? High pressure Low pressure Absolute vacuum Partial vacuum 2 / 10 How does gravity affect objects in a vacuum? It has no effect It increases It decreases It remains the same 3 / 10 What is the approximate speed of light in a vacuum? 3 × 10^8 m/s 1.5 × 10^8 m/s 2.5 × 10^8 m/s 3.5 × 10^8 m/s 4 / 10 Which of the following waves can travel through a vacuum? Sound waves Mechanical waves Electromagnetic waves Seismic waves 5 / 10 What is the mean free path of molecules in a perfect vacuum? Zero Infinite Very large Very small 6 / 10 What happens to boiling point in a vacuum? It increases It decreases It remains the same It fluctuates 7 / 10 Which law explains the absence of air resistance in a vacuum? Newton’s First Law Newton’s Second Law Newton’s Third Law Galileo’s Principle 8 / 10 What happens to sound in a vacuum? It travels faster It travels slower It cannot travel It becomes louder 9 / 10 Which device is used to create a vacuum? Barometer Vacuum pump Thermometer Manometer 10 / 10 What is the pressure inside a perfect vacuum? Zero 1 atm 10 Pa 100 Pa Your score is By WordPress Quiz plugin
