As a Christian scientist, Dr. Bohlin is open to examining the theories of both young-earth and old-earth scientists to explain what we can observe today. The Grand Canyon provides an excellent venue to consider the theories of both groups on how the geological layers were formed and when this occured.
If the door is already attached, swing it open and closed to see how much inertia it has. An average hollow-core door usually weighs around 25 to 30 pounds, so if you can lift or swing the door with minimal effort, it is probably hollow-core. Solid-core doors are usually 25 to 30 pounds heavier than their hollow counterparts, so if the door has some heft to it, it's probably solid-core.
How to Tell If Your Door is Solid-Core. 1  Test the weight of the door. 2  Look at the finish on the door. 3  Examine the paneling on the door, if there is any. 4  Check the door's condition. 5  Consider the door's price, if you know it. Hollow-core doors are less expensive than solid-core doors. If you paid from $20 to $50 for the door, it is almost certainly hollow-core; if you paid more than $50, there's a good chance it is solid-core. Exact price points vary by area, so ask a salesperson at your local home improvement store what sorts of prices to expect for different types of doors.