A scientist is studying the moist, sandy soil on a particular floodplain along a river in the Post Oak Savanah ecoregion of Texas. The soil is an important part of a habitat that supports many plants and animals. The materials that make up the soil are similar to the materials in rocks upstream and different than the bedrock in the floodplain. How did this floodplain form?
A.
Environmentalists built the floodplain from coastal beach sands.
B.
The floodplain formed from a lava flow during a volcanic eruption.
C.
The river deposited sediment outside of its banks during times of flooding.
D.
A massive flood eroded a mountain until it was a flat plain.

Jackson is designing a new heater, and he wants to experiment with different thermally conductive materials. which of these materials would be useful in conducting heat?

Astudent is performing an experiment comparing sound and light waves. the student gathers the following data. what conclusion does the student most likely make based on this data? light waves always travel the same speed; however, the speed of sound is determined by the medium that it travels through. all sound waves always have the same energy, so the temperature of the medium does not affect wave speed. light needs to vibrate particles, so it travels fastest in tightly packed solids, while sound does not need a medium, so it travels fastest in a gas. tightly packed particles in solids slow down the light waves; however, sound waves make particles bounce into each other, so they travel faster in solids.

Time remainin52: 42the chart shows data for a moving object.which conclusion is best supported by the information inthe chart? time (s)velocity (m/s