The type of seismic waves that arrive at the surface first and move by compressing and expanding the ground like an accordion are called a. s waves. b. p waves. c. surface waves. d. mercalli waves

This is important. 1. which of the following is an si base unit for measuring length? (2 points) inch gram meter mole 2. which of the following units for distance is an si unit? (2 points) centimeter foot inch yard 3. which of the following tools should a scientist use to measure an object in meters? (2 points) electronic balance pan balance tape measure thermometer