PF Insights Scavenger Hunt

Have you been keeping up with reading each PF Insight? Let’s find out! Every question’s answer can be found in a PF Insight. Hint links are included if you need help.  Be sure to post your score in the comment area.

1. Eukaryotes actually represent the fusion of an archaeal host and a bacterium that eventually became the mitochondria, through a process called… (Hint)

 Chemosynthesis

 Methanogenesis

 Photosynthesis

 Endosymbiosis

2. When a positive and negative charge are near one another, the total electric field far from the pair (dipole) is… (Hint)

 1

 0

 3

 2

3. It was not until 1797 when _______ first discovered the validity and enormous simplifications possible by complex numbers (Hint)

 Caspar Wessel

 Pierre de Fermat

 Sophie Germain

 Carl Friedrich Gauss

4. A _______ —also known as a stacker rainbow—is an infrequent phenomenon, consisting of several faint rainbows on the inner side of the primary rainbow, and very rarely also outside the secondary rainbow. (Hint)

 Fogbow Rainbow

 Fire Rainbow

 Supernumerary Rainbow

 Secondary Rainbow

5. The _____ is the layer (atmospheric) in which convection can operate. (Hint)

 Stratosphere

 Exosphere

 Ionosphere

 Troposphere

6. Matter particles dilute and photon wavelengths stretch as the universe expands in a process called ______ (Hint)

 Blueshift

 Redshift

 Greenshift

 Yellowshift

7. Planck time is based on the ______, Newton’s gravitational constant, and Planck’s (reduced) constant (Hint)

 Planck hbar

 Atomic mass unit

 Mass of electron

 Speed of Light

8. Back in the early ’70s, the Italian physicist, _______ reportedly said that string theory was part of 21st-century physics that fell by chance into the 20th century. I think it was a very wise remark. (Hint)

 Daniele Amati

 Fabiola Gianotti

 Emilio Segrè

 Edoardo Amaldi

9. Michael Faraday begin as an experimental chemist with _______. (Hint)

 John Dalton

 Joseph Priestley

 Antoine Lavoisier

 Humphrey Davies

10. There are three types of neutrinos: electron neutrinos, muon neutrinos and ______ neutrinos (and their corresponding antiparticles).  (Hint)

 chi

 eta

 tau

 omega

11. The first definition of energy that is usually encountered is “energy is the capacity of a ______ to do work”. (Hint)

 Body

 System

 Particle

 Space

12. In 2010 (at the LHC), it was noted that occasionally small particles fell through the beam pipe and into the beam. As the origin was unclear, they were called “___________” (Hint)

 unidentified falling object

 unidentified floating object

 unidentified foreign object

 unidentified flake object

13. The Northernmost line of latitude where the Sun can be directly overhead (during the Summer Solstice) is called the _________. (Hint)

 Northern Pole

 Northern Hemisphere

 Torrid Zone

 Tropic of Cancer

14. The _____ is the hypothetical shape that the Earth would take if its surface were completely covered in ocean (Hint)

 spheroid

 disphenoid

 geoid

 oloid

15. In GR the force of gravity is considered to be a ______ force (Hint)

 strong

 normal

 resistant

 fictitious

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