Layers of the Atmosphere (Review 2)

Front

The higher one is in the atmosphere the ________________ oxygen(air) there is available to breathe.

Back

Less

Answer explanation

As altitude increases, atmospheric pressure decreases, resulting in less oxygen available to breathe. Therefore, the correct answer is 'Less'.

Front

Where will you find the ozone layer?

Back

stratosphere

Answer explanation

The ozone layer is found in the stratosphere, which is the second layer of Earth's atmosphere. It plays a crucial role in absorbing harmful ultraviolet radiation from the sun.

Front

What is the energy source for the water cycle and weather on Earth?

Back

the sun

Answer explanation

The sun is the primary energy source driving the water cycle and weather on Earth. It heats water, causing evaporation, which is essential for cloud formation and precipitation.

Front

We live in the __________________layer, a level of the atmosphere.

Back

Troposphere

Answer explanation

We live in the troposphere, the lowest layer of the atmosphere, where weather occurs and where we experience most of our daily life. The other layers, like the stratosphere and mesosphere, are higher up and less relevant to our daily experiences.

Front

The coldest layer.

Back

mesosphere

Answer explanation

The mesosphere is the coldest layer of Earth's atmosphere, where temperatures can drop as low as -90°C. In contrast, the troposphere is warmer, and the thermosphere and exosphere are much hotter due to solar radiation.

Front

The hottest layer.

Back

thermosphere

Answer explanation

The thermosphere is the hottest layer of Earth's atmosphere, where temperatures can reach up to 2,500°C (4,500°F) due to the absorption of high-energy solar radiation. This makes it the correct answer.

Front

The most common gas in the atmosphere (78%).

Back

Nitrogen

Answer explanation

Nitrogen is the most abundant gas in the atmosphere, making up about 78% of it. This is significantly more than oxygen (21%) and trace gases, which are present in much smaller amounts.

Front

Where weather occurs and clouds form.

Back

troposphere

Answer explanation

Weather occurs and clouds form in the troposphere, which is the lowest layer of Earth's atmosphere. This layer contains most of the atmosphere's mass and is where all weather phenomena take place.

Front

What does the earth's atmosphere do?

Back

help to regulate the temperature on Earth

Answer explanation

The Earth's atmosphere helps to regulate temperature by trapping heat, creating a stable climate. This is crucial for sustaining life, unlike the other options which are incorrect.

Front

What happens to the air pressure as you increase in altitude?

Back

the air pressure decreases

Answer explanation

As altitude increases, the amount of air above decreases, leading to lower air pressure. Therefore, the correct answer is that the air pressure decreases.