Interesting Facts About Science Facts-003
1. The Moon’s largest crater, the SOUTH POLE–AITKEN BASIN, is 1,550 miles(2,500 km) wide and5 miles (8 km) deep!
2. Oxygen becomes a BLUE LIQUID when it is frozen below -270°F(-168°C).
3. The frequencies of less than 20 Hz (lower limit of audible frequencies) are called infrasonic and those above the upper limit of audible frequencies 20,000 Hz are called ultrasonic (supersonics) waves.