Label the year and name of each geologic area on your geologic time scale. Using the 1 cm = 10 million years scale, figure out and measure each distance below from the PRESENT line.
Pre-Cambrian Era = 4.6 Billion years ago = _______________________ cm from PRESENT
What would be number?
If 10 million years ----> 1 cm
4.6 billion/(10million) = 4.6 x 10^9/(10 x 10^6) = 460
You will need 460 cm or 4.6 metres
To answer this question, we need to determine the distance from the PRESENT line on the geologic time scale for the Pre-Cambrian Era.
Given that the scale of 1 cm on the timeline represents 10 million years, we can calculate the distance as follows:
Distance (cm) = Age (years) / Scale (years/cm)
Age of the Pre-Cambrian Era = 4.6 billion years = 4,600,000,000 years
So, substituting the values into the formula:
Distance (cm) = 4,600,000,000 years / 10,000,000 years/cm
Dividing the two values:
Distance (cm) = 460
Therefore, the distance from the PRESENT line for the Pre-Cambrian Era would be 460 cm.