Science and Astronomy Flashcard

Front

What is the main source of energy for the Earth's systems?

Back

The Sun is the main source of energy for the Earth's systems, driving processes such as weather, climate, and photosynthesis.

Front

In what layer of the atmosphere is the Ozone layer located?

Back

The Ozone layer is located in the Stratosphere, which is the second layer of the Earth's atmosphere.

Front

What is the most abundant gas in the atmosphere?

Back

Nitrogen is the most abundant gas in the Earth's atmosphere, making up about 78% of the air we breathe.

Front

Which mineral is lowest on the Mohs Hardness Scale?

Back

Talc is the mineral that is lowest on the Mohs Hardness Scale, rated at 1, indicating it is very soft.

Front

In which layer of the atmosphere does nearly all weather occur?

Back

Nearly all weather occurs in the Troposphere, the lowest layer of the Earth's atmosphere.

Front

What is the role of the Ozone layer?

Back

The Ozone layer protects life on Earth by absorbing the majority of the Sun's harmful ultraviolet (UV) radiation.

Front

What is the composition of the Earth's atmosphere?

Back

The Earth's atmosphere is composed mainly of nitrogen (78%), oxygen (21%), and trace amounts of other gases like argon and carbon dioxide.

Front

What is the significance of the Troposphere?

Back

The Troposphere is significant because it contains most of the Earth's weather and is where we live.

Front

What is the Mohs Hardness Scale used for?

Back

The Mohs Hardness Scale is used to measure the hardness of minerals, ranking them from 1 (softest) to 10 (hardest).

Front

What is geothermal heat?

Back

Geothermal heat is the heat that comes from the Earth's interior, which can be used for heating and energy.