If more waves start passing a certain point every second,
a. the wave frequency has gone up
b. the wave frequency has gone down
c. the wave frequency has not changed
d. the wave frequency has stopped

What is the measurement of how fast an object moves relative to a reference point?

What effects result when there is an impact between earth and an asteroid? check all that apply. a.massive flooding. b.extinction of many life forms.c.major earthquakes change in average global temperature.d. giant dust cloud

The brightest star in the night sky in the northern hemisphere is sirius. its distance from earth is estimated to be 8.7 light years. a light year is the distance light travels in one year. light travels at a speed of 3.00 × 108 m/s. calculate the distance from earth to sirius in miles. (1 mi = 5280 ft) g