Math
This shape has four equal sides and four right angles.
a square
This force pulls objects toward the center of the Earth.
gravity
This holiday celebrates the signing of the Declaration of Independence.
Independence Day (July 4th)
This punctuation mark is used at the end of a question.
question mark
This electronic device is used to process information and run programs.
a computer
This operation finds the total when two or more numbers are combined.
addition
Plants use sunlight to make food through this process.
photosynthesis
This explorer sailed across the Atlantic Ocean in 1492.
Christopher Columbus
A word that describes a noun is called this.
adjective
This tool is used to accurately measure the length of an object in inches or centimeters.
a ruler
A fraction that represents one-half can also be written as this decimal.
0.5
Water changes from a liquid to a gas during this process.
evaporation
The first President of the United States was this person.
George Washington
The words "run," "jump," and "think" are examples of this part of speech.
a verb
This is the process engineers use to solve problems and create new products or solutions.
The Engineering Design Process
The perimeter of a rectangle is found by adding up all of these.
the sides
This planet is known as the "Red Planet."
Mars
This document begins with the words "We the People."
the Constitution
A comparison using "like" or "as" is called this.
simile
This type of energy comes from the sun and can be converted into electricity using solar panels.
solar energy
This is the name for a number that is divisible only by 1 and itself.
prime number
Animals with backbones belong to this group.
vertebrates
This famous civil rights leader delivered the "I Have a Dream" speech.
Martin Luther King Jr.
The main message or lesson of a story is called this.
the theme
The seven categories of technology include Agriculture, Construction, Manufacturing, Transportation, Communication, Medical, and this category.
Energy/Power Technology