Earth's systems

A weather balloon is about 2 meters wide when it is near the ground. It grows to about 6 meters wide at higher altitudes. Which change most likely makes the balloon become wider at higher altitudes? Mark only one oval.

• More gases enter the balloon.

• The gas inside the balloon gets much hotter.

• The air pressure surrounding the balloon decreases.

• Sunlight breaks down the material of the balloon.

Tags

NGSS.MS-PS3-4

This diagram shows the gases that make up Earth’s atmosphere. The most abundant gas in Earth's atmosphere is ___ Mark only one oval.

• carbon dioxide

• argon

• oxygen

• nitrogen

The circle graph below shows the relative proportions of components of Earth’s atmosphere. Which element is represented by the shaded portion?

• phosphorous

• nitrogen

• oxygen

• sodium

Which element makes up most of the air we breathe?

• carbon

• argon

• nitrogen

• oxygen

Almost all of the water on Earth is salty. Only three percent of the water on Earth is fresh water. This graph describes the fresh water on Earth: Which best describes the percentages of fresh water on Earth?

• There is more than twice as much frozen water as underground water.

• There is more than twice as much underground water as frozen water.

• There is more water in lakes and rivers than there is underground.

• There is more water in lakes, rivers, and underground than there is frozen water.

Tags

NGSS.MS-ESS2-4

According to the chart, which element is most essential to our planet?

• silicon

• oxygen

• nitrogen

• hydrogen

What physical characteristic do the Earth and the Moon share?

• They both produce light.

• They both experience weather.

• They both have a solid surface.

The Earth is one of the inner planets in our solar system. The inner planets are considered terrestrial planets. What are terrestrial planets composed of?

• ice

• rock

• gas

• water

Audrey is having a snowball fight with her brother on winter break. Which of the Earth's sphere's would Audrey's snowballs belong to? Mark only one oval.

• biosphere

• hydrosphere

• atmosphere

• geosphere

When making a terrarium, which earth sphere is represented by the dirt? Mark only one oval.

• biosphere

• hydrosphere

• atmosphere

• geosphere