This organ in your chest pumps blood all day long.
What is the heart?
A push or pull that can make something move is called a _____.
What is a force?
Rain, snow, sleet, and hail are all kinds of _____.
What is precipitation?
The first ten amendments to the Constitution are called the _____.
What is the Bill of Rights?
The U.S. governing document that begins “We the People” is the _____.
What is the Constitution of the United States?
During photosynthesis, plants take in this gas from the air to help make sugar.
What is carbon dioxide?
A household device that turns chemical energy into electrical energy is a _____.
What is a battery?
The lowest layer of the atmosphere—where clouds and weather form—is the _____.
What is the troposphere?
The conflict between Northern and Southern states from 1861‑1865 is known as the _____.
What was the Civil War?
Each U.S. state elects this many Senators.
What is two?
A cross of Bb × bb yields what percent of offspring showing the recessive trait?
What is 50 %?
A bike rides 30 km in 2 h. What is its average speed?
What is 15 km/h?
Which earthquake wave (P or S) cannot travel through Earth’s liquid outer core?
What is an S‑wave?
Which 1803 purchase from France doubled the size of the United States?
What was the Louisiana Purchase?
If both the President and Vice President can no longer serve, who becomes President?
Who is the Speaker of the House?
When blood glucose rises after a meal, the pancreas releases this hormone to lower it.
What is insulin?
Elements in the same vertical column of the periodic table form a(n) _____, sharing valence‑electron patterns.
What is a group (or family)?
Magnetic “stripes” of reversed polarity in seafloor basalts on both sides of mid‑ocean ridges provided key evidence for this geologic theory.
What is seafloor spreading / plate tectonics?
The 1848 Seneca Falls Convention issued a declaration demanding rights for this group.
Who were women?
The constitutional clause that makes federal law the “supreme law of the land” over state laws is called the _____.
What is the Supremacy Clause?
Variation in Galápagos finch beaks is an example of this evolutionary process in which one ancestral species diversifies to fill different niches.
What is adaptation?
The measure of disorder that must increase in any closed‑system energy transformation is called _____.
What is entropy?
After shedding its outer layers, a Sun‑like star becomes this dense, Earth‑sized stellar remnant.
What is a white dwarf?
The Strategic Arms Limitation Talks (SALT) took place during what era of U.S.–Soviet tension?
What was the Cold War?
In Citizens United v. FEC (2010), the Court said limits on corporate independent spending violated protections found in which amendment?
What is the First Amendment?