EARTH & SPACE
This layer of Earth is made of solid rock and forms the continents and ocean floors.
Crust
He was the first president of the United States.
George Washington
A shape with four equal sides and four right angles is called this.
Square
Words that have the same meaning are called this.
Synonyms
The smallest unit of life is called a cell. True or False?
True
This force keeps planets in orbit around the sun.
Gravity
This document, approved in 1776, declared America independent from Britain.
Declaration of Independence
The value of pi rounded to two decimal places.
3.14
The subject in the sentence “The dogs barked loudly” is this word.
Dogs
Plants use sunlight to make food through this process.
Photosynthesis
The longest day of the year in the Northern Hemisphere occurs during this event.
Summer Solstice
The movement that aimed to end slavery in the United States was called this.
Abolition Movement
If 3x + 9 = 24, then x equals this.
x = 5
This punctuation mark is used to show possession or contractions.
Apostrophe
Animals that eat only plants are called this.
Herbivores
Name the phase of the moon when the side facing Earth is completely in shadow.
New Moon
This U.S. purchase in 1803 doubled the size of the nation.
The Louisiana Purchase
A number that can only be divided evenly by 1 and itself is called this.
Prime number
Give the plural of the word “phenomenon.”
Phenomena
This organ in the human body controls all actions, thoughts, and senses.
Brain
Earth is located in this specific arm of the Milky Way galaxy.
Orion Arm (sometimes called the Orion Spur)
She was the Underground Railroad’s most famous conductor.
Harriet Tubman
The volume of a rectangular prism is found by multiplying length, width, and this measurement.
Height
The phrase “She ran quickly” ends with this part of speech.
Adverb
The group of animals that lay eggs, have feathers, and are warm-blooded.
Birds