Topic 1

Front

What is an open system?

Back

An open system is one that interacts with its environment, allowing both inputs and outputs.

Front

What is a closed system?

Back

A closed system is one that does not exchange matter with its surroundings, though it may exchange energy.

Front

What is the visible spectrum?

Back

The visible spectrum is the portion of the electromagnetic spectrum that is visible to the human eye, typically ranging from about 380 nm to 750 nm.

Front

What is active remote sensing?

Back

Active remote sensing involves sending a beam of energy (like radar) to measure the reflected energy from objects.

Front

What is negative feedback in systems?

Back

Negative feedback is a process where the output of a system dampens or reduces the effects of changes, promoting stability.

Front

What is positive feedback in systems?

Back

Positive feedback is a process where the output of a system amplifies or increases the effects of changes, leading to exponential growth or decline.

Front

What is the range of latitudes?

Back

The range of latitudes varies from 0° at the Equator to 90° at the poles.

Front

What is the range of longitudes?

Back

The range of longitudes varies from 0° at the Prime Meridian to 180° east and west.

Front

What is the difference between open and closed systems?

Back

Open systems exchange both matter and energy with their environment, while closed systems only exchange energy.

Front

What is the role of clouds in the Earth's climate system?

Back

Clouds can reflect sunlight, which cools the Earth's surface, and they can also trap heat, contributing to warming.