Form when hot air near the surface rises quickly through a small pocket of cooler, low-pressure air above it

Discuss the problems of the big bang model

What will be an ideal response?

A 75-kg swimmer dives horizontally off a 250-kg raft initially at rest. If the diver's speed immediately after leaving the raft is 2 m/s, what is the corresponding raft speed?

a. 0.2 m/s c. 0.6 m/s b. 0.3 m/s d. 4.0 m/s

The predominant gas in the atmosphere of Earth is

A) oxygen. B) nitrogen. C) water vapor. D) carbon dioxide. E) methane.

When helium fusion begins in a one solar mass main star, it begins gradually, with this rate slowly increasing over time

Indicate whether the statement is true or false