Question

fill in the blank question. it takes a continent approximately 250,000,000 years to move half - way around earth, a distance of about 19,300 km or 1,930,000,000 cm. the speed of the continent in per can be found by dividing 1,930,000,000 cm by 250,000,000 years.

Explanation:

Step1: Recall speed formula

Speed = distance/time.

Step2: Identify units

We are dividing distance in cm by time in years. So the speed will be in centimeters per year.

Answer:

centimeters; year