Tracking scores from past assignments

Which two statements explain how water weathers and erodes rock? A. Water gathers in oceans. B. Water seeps into the soil. Water evaporates in the Sun. D Water freezes in cracks in rocks E Water carries matter downstream.

A rifle fires a bullet into a giant slab of butter on a frictionless surface. The bullet penetrates the butter, but while passing through it, the bullet pushes the butter to the left, and the butter pushes the bullet just as hard to the right,

After three half-lives, one-ninth of an original radioactive parent isotope remains, and eight-ninths has decayed into the daughter isotope. A. TrueB. False

Which of the following represents a chemical change? rocks being smoothed by rapid water movement the pink color of a rose iron's attraction to a magnet decomposition of stone due to acid rain

2) How many significant figures are in the number 0.0037010?

5 potential causes of infertility

Which medium could NOT transmit a mechanical wave? A. air B. rope C. vacuum D. metal bar

Most engines will contain how many cylinders in order to maintain a proper balance of weight and forces? A. An even number B. Always six C. An odd number D. Always four

What is the wavelength of an earthquake wave if it has a speed of 8 km/s and a frequency of 2 Hz?

According to the big bang theory, how did the universe form?