On the Moon they would weigh only 200 N. The astronaut's mass is 120kg wherever they are. The weight of an object changes if the strength of gravity changes. Remember: a mass of 1 kg has a weight of about 10 N on Earth.
The droplets in the air may be breathed in by those nearby. Spread can also occur by touching the nose or mouth with droplet contaminated hands. Examples of droplet spread diseases: 1  common cold. 2  flu. 3  meningococcal disease. 4  rubella.
Tuberculosis (TB), measles and chickenpox. are some of the germs spread by airborne. transmission. *Brief definitions of the words that appear in bold can be found on page 4. Germs are all around us. For people with cystic fibrosis (CF), some germs can cause. serious lung problems.