Question

Tectonic plates are large segments of the Earth's crust that moves slowly. Suppose that one such plate has an average speed of 4.0 cm/per year. a.) what distance does it move in 1 second at this speed. b.) What is the speed per kilometer per million years

Answer 1

Answer:

a. $3.04\times 10^{-8}m$

b. = 40 km/ million years

Explanation:

The computation is shown below;

According to the question, Data provided in the question

Average speed = 4.0 cm / per year

Distance move in 1 second at this speed

Based on the above information

a. For distance move in 1 second is

As we know that

$d_1 = v_g \times t\\\\ = 4\ cm \times \frac{1}{100\times 365.25\times 3,600} \times 1\s\\\\= 3.04\times 10^{-8}m$

b. For speed per kilometer per million years is

$v_1 = 4\times \frac{10^6}{10^5}$

= 40 km/ million years