Science
Texas Rivers
Hydrologic Cycle
Aquifers
Ecosystems
100

This process transforms liquid water into a gas or water vapor.

What is evaporation?

100

This river is the longest in Texas, extending 1,280 miles and running near such cities as Waco and College Station.

What is the Brazos River?

100

In this process, water is transformed from a gas to a liquid.

What is condensation?

100

This type of rock slowly dissolves in acidic water forming caves or caverns.

What is limestone?

100

Areas that are periodically or permanently covered with fresh or salt water.

What is a wetland?

200

At sea level, water boils at this temperature.

What is 212 degrees Fahrenheit, or 100 degrees Celsius?

200

This river flows through Texas' capital city?

What is the Colorado River?

200

This process describes how water moves into the soil surface. 

What is infiltration?

200

These form as a result of geothermal springs, bringing warm or hot water to earth's surface. Many of these are found in Yellowstone National Park.

What are geysers?

200

A water basin or drainage area which collects precipitation within its topographic boundaries.

What is a watershed?

300

When water is placed in a tube, this forms as water is pulled slightly higher on the sides of the tube compared to the middle, forming a crescent shape.

What is meniscus?

300

This river forms a long stretch of the northern border between Texas and Oklahoma.

What is the Red River?

300

This term describes the movement of water from plant pores into the atmosphere.

What is transpiration?

300

Many of these naturally bring groundwater to the surface, and are often a primary water source for rivers and streams.

What are springs?

300

In this process, energy in sunlight is captured by a plant to produce food from carbon dioxide and water, releasing oxygen as a byproduct.

What is photosynthesis?

400

This term describes how heavy something is compared to its volume.

What is density?

400

This river stretches from southern Colorado to the Gulf of Mexico extending through three states.

What is the Rio Grande River?

400

This process occurs when solid water transforms directly into water vapor without becoming a liquid first.

What is sublimation?

400

This large aquifer underlies portions of eight states, including the Texas Panhandle. 

What is the Ogallala Aquifer?

400

This type of pollution comes from a broad area or wide variety of sources.

What is non-point source pollution?

500

This property of water explains how some insects are able to remain on the water's surface without falling in.

What is surface tension?

500

This remote, 90-mile long river located in southwest Texas is considered the most pristine in Texas. 

What is the Devils River?

500

Water that flows off of surfaces into streams and rivers, ponds, lakes or the ocean.

What is runoff?

500

In this type of water well, water comes to the surface without being pumped.

What is artesian?

500

This is caused by excessive nutrients such as nitrogen and phosphorus in a water body. It causes dense growth of aquatic plants and decreases oxygen levels in the water.

What is eutrophication?

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