NSB Round 6

Question 1

The name for a common tangent that intersects the segment joining the centers of 2 circles?

Accepted Answer

Internal Common Tangent

Question 2

Flagpole has 100-ft shadow if 6-ft person has an 8-ft shadow how many feet tall is the flagpole

Accepted Answer

75

Question 3

How many joules are in a single watt-hour?

Accepted Answer

3,600

Question 4

Used to dateEarth’s oldest rocks at 4-plus billion years

Accepted Answer

zircon

Question 5

Which of the following is best used to date the age of theEarth to about 4.5 billion years old

Accepted Answer

uranium-238

Question 6

Question 5

Accepted Answer

Salt Bridge

Question 7

What is the name for the straight-chain alkane containing 5 carbons?

Accepted Answer

Pentane

Question 8

CHEMISTRY Multiple Choice Which of the following is NOT true:

Accepted Answer

hydrogen gas found in nature exists as a monatomic molecule

Question 9

Physical property of stars is most directly responsible for how long they will continue fusion?

Accepted Answer

Mass

Question 10

TRUE for an object moving at a constant speed

Accepted Answer

it can be accelerating

Question 11

PHYSICS Which of the following most commonly functions to limit current to one direction:

Accepted Answer

Diode

Question 12

Convert 140ºF into degrees Celsius:

Accepted Answer

60

Question 13

Which of the following is best used to date the age of the Earth about 4.5 billion years old:

Accepted Answer

uranium-238

Question 14

Outer shell electrons are on two principal energy levels

Accepted Answer

transition elements

Question 15

What section of the small intestine is the first to receive gastric contents?

Accepted Answer

Duodenum

Question 16

500 metric gigatons is approximately equal to how many pounds:

Accepted Answer

1,100 trillion

Question 17

Increaseof 1ºC is equivalent to an increase of how many degrees Fahrenheit

Accepted Answer

1.8, 1.8

Question 18

Question 11

Accepted Answer

low in the western sky

Question 19

Which best explains from where most of the dust that covers the surface of the Moon came:

Accepted Answer

from rock pulverized from many impacts

Question 20

Which are elements in the Periodic Table whose outer shell electrons are on two energy levels:

Accepted Answer

transition elements

Question 21

If a star is above the eastern horizon at sunset wherewould it be before the following sunrise

Accepted Answer

low in the western sky

Question 22

Which BEST describes the function of boric acid in the making of Pyrex or borosilicate glass:

Accepted Answer

reduces the effect of detrimental ultraviolet light exposure

Question 23

Question 9

Accepted Answer

zircon

Question 24

Which happens to the shells of snails and limpets as seawater becomes increasingly acidic:

Accepted Answer

They begin to dissolve

Question 25

Name all of the following 4 choices that are TRUE for an object moving at a constant speed:

Accepted Answer

it can be accelerating

Question 26

Question 16

Accepted Answer

batholith

Question 27

Pyrex glass contains many of the same components as soda lime glass but also contains 5%:

Accepted Answer

Boric Acid

Question 28

Which is NOT a common mineral in igneous rock but an accessory that occurs in small amounts:

Accepted Answer

muscovite

Question 29

In which of the following organ systems of the human body do chief cells primarily function:

Accepted Answer

Digestive

Question 30

For every CO2 molecule fixed in the Calvin-Benson cycle, how many NADPH molecules are utilized

Accepted Answer

2

Question 31

CHEMISTRY Multiple Choice Which of the following is NOT true of ideal gases:

Accepted Answer

collisions btwn gas particles are both elastic and inelastic

Question 32

An increase of 1ºC is equivalent to an increase of how many degrees Fahrenheit?Onedecimal place

Accepted Answer

1.8

Question 33

Continental margins facing the edges of diverging tectonic plates are called:

Accepted Answer

passive margins

Question 34

Which is the term for the transfer of genes by viruses from one prokaryote to another:

Accepted Answer

Transduction

Question 35

Which of the following is a molecule having a nonpolar covalent bond:

Accepted Answer

Bromine Gas

Question 36

Radon is primarily produced naturally on Earth most directly from thedecay of what element

Accepted Answer

Radium

NSB Round 6

Questions 36

NSB Round 6

Questions 36