This picture shows three layers of the Earth. Which layer is the hottest? a) The outer layer, called the Earth’s crust b) The middle layer, called the Earth’s mantle c) The inner layer, called the Earth’s core

How many pairs of chromosomes are in found in the average human? a) 20 b) 22 c) 23

In humans, the atlas and axis bones are found in which part of the body? a) legs b) neck c) abdomen

Who developed and patented the electrical telegraph in the United States in 1837? a) Samuel Morse b) Alexander Graham Bell c) Thomas Alva Edison

Zero degrees Celsius is equal to what reading on the Fahrenheit scale? a) 32 b) 26 c) 41

What is the element present on lead pencils? a) Carbon b) Lead c) Zinc

What vitamin is produced when a person is exposed to sunlight? a) B12 b) E c) D

Who is generally acknowledged as the “father” of the modern periodic table? a) Dmitri Mendeleev b) Joseph Priestley c) Sir Humphry Davy

Composing about 78 percent of the air at sea level, what is the most common gas in the Earth's atmosphere? a) Oxygen b) Nitrogen c) Carbon dioxide

Electric resistance is typically measured in what units? a) Watts b) Ohms c) Volts

What blood type do you need to be a universal donor? a) O+ b) O - c) AB+

Penicillin was discovered in 1928 by which scientist? a) Sir Alexander Fleming b) Pasteur c) Marie Curie

If you suffered from ophidiophobia which animal would you be afraid of? a) Snakes b) Spiders c) Birds