Q: What is the transfer of thermal energy by waves that can travel through empty space called? Choices: - convection - induction - vibration - radiation A:
radiation

Q: Gravitational force on a large scale dominates interactions between large objects because it is always what? Choices: - ugly - vulnerable - suitable - attractive A:
attractive

Q: Q: Water droplets form when the air reaches 100-percent what? Choices: - density - chance of rain - heat - humidity A:
A: humidity

Question: Q: Enzymes - proteins which speed up what? Choices: - crystals reactions - liquid reactions - physical reactions - chemical reactions A:
Answer: chemical reactions

*Question*
Q: The lack of annihilation radiation coming to us from space proves that the universe is dominated by what? Choices: - vacuum - energy - space - matter A:
**Answer**
matter

*Question*
Q: Every object is attracted to every other object by what force? Choices: - weight - magnetism - pheromones - gravity A:
**Answer**
gravity