Which of these statements is not considered part of the Big Bang Theory? OPTIONS:
- The universe is expanding.
- The universe never changes.
- The universe began in a hot, dense state.
- The universe began at a single point and time.
A: The universe never changes.

Which part of the atom has a negative charge? OPTIONS:
- neutron
- nucleus
- electron
- proton
A: electron

Which process will separate the sugar from a mixture of sugar and water? OPTIONS:
- Stirring the mixture
- Evaporating the water
- Adding more water
- Adding more sugar
A: Evaporating the water

Which material is the best natural resource to use for making water-resistant shoes? OPTIONS:
- cotton
- leather
- plastic
- wool
A:
leather