Terrain to Raster

Creating Raster by using Terrain 

Step 1,

Open Terrain model using ArcMap

 (Use this link for creating new terrain http://effective-gis.blogspot.com/2013/12/create-digital-terrain-model.html)

Step 2,

Go to ArcToolbox - 3D Analyst Tools - Conversion - From Terrain - Terrain to Raster

Step 3,

Use your Terrain as "Input Terrain" change "Sampling Distance " as you required...

Step 4,

Press "OK"

Step 5,

You can change the colors using Symbology