When a radar gun says the pitch is 90 miles per hour at what point in the balls travel to home plate is the radar gun measuring the velocity?
What is a positron?
Explain which way do twin screw props on a boat rotate when propelling the boat forward?
What is environmental geologists?
What is moment of inertia?
What is the mantle made of?
Explain refraction?
Explain which of the earths interior layers have been drilled and sampled?
Define a hypothesis?
Explain canyon?
A solar collection has been installed to heat water. A large water tank has a volume of 5.0 x 105 cm3. The area of the solar collectors is 8m2. (2 meters by 3 meters). If the water in the tank starts out with a temperature of 30°C in the morning, what is its temperature in the evening after the sun has set?
Explain optical telescopes?
Which animals communicate on under water sounds?
Explain the universal law of universal gravitation?
What does a geologist do on a typical day?