*Question*
Q: Wavelengths are described by a unit of what? Choices: - weight - direction - speed - distance A:
**Answer**
distance

*Question*
Q: Earth acts like a giant version of what device, with angular momentum along its axis and pointing at polaris, the north star? Choices: - compass - telescope - accelerator - gyroscope A:
**Answer**
gyroscope

*Question*
Q: Rubbing your hands together warms them by converting work into what energy? Choices: - kinetic energy - motion energy - layer energy - thermal energy A:
**Answer**
thermal energy

*Question*
Q: What does the geiger counter detect? Choices: - vibration - convection - moisture - radiation A:
**Answer**
radiation