ESS 2.1

Which of the following contains all of the Earth's water?

• atmosphere

• hydrosphere

• lithosphere

• biosphere

Tags

NGSS.MS-ESS2-4

Which sphere contains living things on Earth?

• lithosphere

• atmosphere

• hydrosphere

• biosphere

Which sphere consists of the layer of gases that surrounds us?

• biosphere

• atmosphere

• hydrosphere

• lithosphere

Tags

NGSS.MS-ESS2-6

Which of Earth's systems protects living things from harmful solar ultraviolet radiation?

• lithosphere

• biosphere

• atmosphere

• hydrosphere

All of the Earth's spheres are interconnected and influence each other.

• True

• False

Tags

NGSS.MS-ESS2-4

Which of the following causes erosion?

• wind

• pressure

• water

• all of the above

Tags

NGSS.MS-ESS2-2

NGSS.MS-ESS2-4

Ocean water moves around the Earth as shown. Choose the best statement that explains how surface currents and deep water (density) currents are related.

• As surface currents move towards the equator, they cool and sink, becoming deep water (density) currents.

• As deep water (density) currents mix with warmer, less salty water, they become less dense and slowly rise becoming surface currents.

• As the density currents move towards the poles, they pull warmer, less dense water down, adding more water to the deep water (density) current.

• As the surface currents move above, density currents are moving below, but the two currents do not connect.

Tags

6.ESS2.1

What causes the movement of deep water (density) currents shown in the diagram?

• Earthquakes

• Coriolis Effect

• Differences in temperature and salinity

• Wind

Tags

6.ESS2.1

Ocean water moves around the Earth as shown below.  Choose the best statement that explains how surface currents and deep water (density) currents are connected.

• As surface currents move towards the equator, they cool and sink, becoming deep water (density) currents.

• As the density currents move towards the poles, they pull warmer, less dense water down, adding more water to the deep water (density) current.

• As the surface currents move above, density currents are moving below, but the two currents do not connect.

• As the surface currents move towards the poles, they cool, becoming more dense and sinking to become deep water (density) currents.

Tags

6.ESS2.1

The experiment below simulates how density, salinity, and temperature affect deep water currents. Students placed different colored samples of seawater in a tank of room temperature fresh water.  Which of the following conclusions would best support the image of the investigation? 

• The blue liquid is saltier and warmer than the water in the tank, so it sinks to the bottom.

• The blue liquid is saltier and colder than the water in the tank, so it sinks to the bottom.

• The blue liquid is less salty and colder than the water in the tank, so it sinks to the bottom.

• The blue liquid is less salty and warmer than the water in the tank, so it sinks to the bottom.

Tags

6.ESS2.1