Which is the smaller unit

Terameter or gigameters

The smaller unit is gigameters. 1 terameter (Tm) is equal to 1,000,000 gigameters (Gm).

The smaller unit between a terameter and a gigameter is the gigameter.

1 gigameter (Gm) is equal to 1 billion meters or 10^9 meters.
1 terameter (Tm) is equal to 1 trillion meters or 10^12 meters.

So, a gigameter is smaller than a terameter by a factor of 1000.

To determine which is the smaller unit between terameter and gigameter, you need to understand the metric prefix system.

In the metric system, tera- (T) is a prefix that denotes a factor of 10^12, which means a terameter is equal to 1,000,000,000,000 meters.

On the other hand, giga- (G) is a prefix that represents a factor of 10^9, so a gigameter is equal to 1,000,000,000 meters.

Comparing these values, we can see that a gigameter is smaller than a terameter.

To further explain how to determine the smaller unit using the metric prefix system in general, you need to identify the prefixes involved and their respective powers of 10. From there, you can compare the values and determine the relative sizes of the units.