As you stand on the escalator going from one floor to a higher one at constant speed, which of these statements best describes what is happening?

In the bottom, double-slit pattern shown above there are lots of small dark lines separating the band of red light into individual spots. The spots are not present in the top image. What causes these?

This picture below was taken in Death Valley, a dry basin in California.    US park service, public domain Which of these caused the features in the image?

We have placed many satellites in orbit around the Earth. How are we able to keep them up in the sky?

As the block from the problem above is pushed deeper into the water, what happens to the pressure on the bottom surface of the block?

Which one of these forces is a result of an electromagnetic interaction?

Below is a picture of a nearby star-forming molecular cloud in our galaxy. Two southern hemisphere telescopes were used to take the pictures of protostars in this molecular cloud shown below. The next five questions test your understanding of the life of a star. Attributions Images ALMA (ESO/NAOJ/NRAO), J. Tobin; NRAO/AUI/NSF, S. Dagnello; Herschel/ESA. Protostarts in Orion Molecular Clouds . (CC BY 3.0). Via NRAO.

 According to Dr. Kowallis, how are the destructions described in 3 Nephi best explained?

What would be the best method to determine the distance to a nearby star? (A star 10 light years away is an example of a nearby star.)

Carbon-14 (14C) is not stable and it spontaneously decays into nitrogen-14 (14N) and an electron by a radioactive beta-decay. Which of these is true about the decay?