Which habit may cause heart diseases? Smoking
One Kilometer is equal to: 1000 m
What type of EM radiation gives people tans? Ultraviolet
What range of electromagnetic radiation is used to cook food in special ovens? Microwave
What is the range of frequencies in which AM radio operates? Microwave
Mirrors is most suitable for using as a reflector in car headlights? Parabolic mirror
If the stars are moving away from the Earth show a: Redshift
If the stars are moving towards the earth show a: Blueshift
Doppler affect can be used to calculate the speeds of: Distant stars
Which acid is produced in our stomach to digest food? Hydrochloric Acid
