General science
This basic unit of life contains DNA and is classified as either prokaryotic or eukaryotic.
What is a cell
Representing the zero-degree line of latitude, this imaginary belt divides the Earth into the Northern and Southern Hemispheres.
What is the equator
Keeping the planets, asteroids, and comets in permanent elliptical orbits, this is the primary force generated by the Sun's massive weight.
What is gravity
These are the preserved remains, impressions, or traces of ancient organisms that scientists find embedded in rock layers.
What are fossils.
Animals that hunt other animals for food are called predators, while the animals they hunt are known by this term.
what is prey.
Water freezes at 0 degrees Celsius, but it boils at this temperature at sea level.
What is 100 degrees celsius
Mountains and deep ocean trenches are formed by the slow, grinding movement of these massive slabs of the Earth's lithosphere.
What are tectonic plates
Due to a slight fractional variance in its orbital speed, Earth takes roughly 365.25 days to circle the Sun, requiring the addition of this extra calendar day every four years.
What is a leap day.
Meaning "fearfully great lizard," this massive group of prehistoric reptiles ruled the Earth during the Mesozoic Era.
What are dinosaurs
While humans rely on lungs to breathe, fish rely on these specialized organs to extract dissolved oxygen from water.
What is gills.
Sound travels via vibrations through a medium, moving significantly faster through this liquid than it does through air.
What is water.
This specific type of map uses tightly spaced contour lines to display changes in physical elevation and land layout.
What is a topographic map
Orbiting past Mars, this gas giant currently boasts the most officially recognized moons in our solar system, with a total of 95.
What is the outer core.
Scientists believe a massive impact from one of these rocky space objects triggered the extinction of the dinosaurs 66 million years ago.
What is a asteroid.
This tiny, nectar-drinking bird is the only avian species capable of flying backward, hovering in place, and even flying upside down.
What is a hummingbird.
Only certain ferromagnetic metals are strongly attracted to magnets; this common metal used to make soda cans is completely non-magnetic.
What is aluminium
This geographic term refers to the gradual wearing away of rocks and soil by natural forces like wind and moving water.
What is erosion
This is the planetary term for a massive, identity-retaining pattern of shapes that appears completely identical no matter how closely you magnify it.
What is fractal
This is the branch of science that specifically studies fossils and prehistoric life forms rather than modern animals.
What is palaeontology?
If a veterinarian tells you an animal is bovine, it belongs to the biological family that includes buffalo, bison, and this common farm animal.
What is a cow.
Accounting for over 60% of its mass, this is the single most abundant element in both the human body and the Earth's crust.
What is oxygen
Marking the absolute deepest known point in the Earth's oceans, this geographic feature is located in the western Pacific's Mariana Trench.
What is the challenger deep
According to dynamo theory, the Earth's vital magnetic field is generated by the continuous movement of liquid iron inside this specific planetary layer.
What is the outer core.
Preserved prehistoric tree resin, often trapping ancient insects inside it, is known by this gemstone name.
What is amber.
Migrating birds often navigate by sensing this invisible planetary force field, using tiny crystals of iron oxide in their beaks like a built-in compass.
What is Earth's magnetic field.