SCIENCE
This planet is known as the Red Planet.
What is Mars?
What is 15 × 12?
What is 180?
This common kitchen ingredient is often used to neutralize odors in refrigerators.
What is baking soda?
Alexander Graham Bell is traditionally credited with inventing this device.
What is the telephone?
He was the first president of the United States.
Who is George Washington?
This gas makes up approximately 78% of Earth’s atmosphere.
What is nitrogen?
: If a $100 item is discounted by 25%, this is the sale price.
What is $75?
This acidic household liquid is commonly used to remove mineral deposits and clean glass.
What is vinegar?
Thomas Edison famously worked on improving this invention, which transformed indoor lighting.
What is the incandescent light bulb?
This document begins with the famous words “We the People.”
What is the U.S. Constitution?
The human body has approximately this many bones in adulthood.
What is 206?
What is 15% of 200?
What is 30?
These tiny organisms are a major reason food should not be left at room temperature for extended periods.
What are bacteria?
Johannes Gutenberg’s famous invention revolutionized the mass production of books.
What is the printing press?
This president issued the Emancipation Proclamation.
Who is Abraham Lincoln?
This scientist developed the three laws of motion and the law of universal gravitation.
Who is Isaac Newton?
A triangle has angles of 45° and 65°. This is the measurement of its third angle.
What is 70°?
This laundry symbol, represented by a triangle, generally relates to this aspect of clothing care.
What is bleaching?
Eli Whitney’s machine dramatically sped up the separation of seeds from cotton fibers.
What is the cotton gin?
The 19th Amendment gave women this constitutional right.
What is the right to vote?
This organelle is often called the “powerhouse of the cell.”
What is the mitochondrion?
A train travels 60 miles per hour for 2½ hours. This is the distance it travels.
What is 150 miles?
The process of removing visible dirt, followed by disinfecting surfaces to reduce microorganisms, involves these two distinct cleaning steps.
What are cleaning and disinfecting?
This Scottish engineer is credited with developing practical improvements to the steam engine that helped launch the Industrial Revolution.
Who is James Watt?
This 1803 transaction nearly doubled the size of the United States.
What is the Louisiana Purchase?