Question:
What is the frequency of ocean waves that have a speed of 18 m/s and a wavelength of 50 m?
OPTIONS:
- 0.18 Hz
- 0.36 Hz
- 2.8 Hz
- 9.0 Hz
Answer:
0.36 Hz
Question:
The water contained in a geyser system gains energy from the underground material surrounding it. The water molecules gain kinetic energy and this results in an increase in the pressure of the water. Eventually the geyser erupts and expels water into the air above ground. Which of the following types of energy is the source for the initial energy gain of the water?
OPTIONS:
- electrical
- magnetic
- mechanical
- thermal
Answer:
thermal
Question:
Tigers and household cats are members of the same family; however, their sizes are vastly different. What is the cause of this difference?
OPTIONS:
- biochemical makeup
- behavioral makeup
- genetics
- habitat size
Answer:
genetics
Question:
What two gases make up most of the Earth's atmosphere?
OPTIONS:
- Hydrogen and oxygen
- Hydrogen and nitrogen
- Oxygen and carbon dioxide
- Oxygen and nitrogen
Answer:
Oxygen and nitrogen