Earth Science
Large ocean waves that are usually triggered by underwater earthquakes or volcanic eruptions. They can travel across entire ocean basins.
What are Tsunamis?
This metal is commonly used in construction and tools. When combined with carbon, it forms steel. Its chemical symbol is Fe.
What is Iron?
This quantity describes how much matter an object contains, and its SI unit is the kilogram.
What is mass?
These massive structures contain billions of stars along with gas, dust, and dark matter. The Milky Way is an example of one.
What are Galaxies?
These biological molecules are made of amino acids linked by peptide bonds. They perform functions such as building tissues, acting as enzymes, and transporting molecules.
What are Proteins?
Daily changes in sea level are mainly caused by the gravitational pull of the Moon. Coastal areas often experience two high tides and two low tides each day.
What are Tides?
This highly reactive metal reacts strongly with water and forms table salt when combined with chlorine. Its symbol comes from the Latin word natrium.
What is Sodium?
This process powers stars by combining lighter atomic nuclei into heavier ones, releasing enormous energy.
What is Nuclear Fusion?
Most of these rocky objects orbit the Sun in a region between Mars and Jupiter known as a belt.
What are asteroids?
These structures convert kinetic energy from moving air into electrical energy. They typically have large blades mounted on tall towers.
What are wind turbines?
Underground spaces form when slightly acidic water dissolves limestone. They can contain formations such as stalactites and stalagmites.
What are caves?
This highly reactive halogen forms a pale yellow gas and is the most electronegative element on the periodic table.
What is fluorine?
These invisible vector fields surround magnets and electric currents, and their strength is measured in teslas.
What are magnetic fields?
These electromagnetic waves have the shortest wavelengths and the highest energy and are produced during nuclear reactions and cosmic events.
What are Gamma Rays?
This process was described in a book titled On the Origin of Species. It occurs through mechanisms like natural selection and genetic variation. Over many generations, organisms change and adapt to their environments.
What is Evolution?
An atmospheric layer contains the ozone layer that absorbs harmful ultraviolet radiation. It lies above the troposphere.
What is the Stratosphere?
This element is the foundation of organic chemistry, and its allotropes include graphite.
What is Carbon?
This force pulls objects toward each other based on their mass and distance and is responsible for keeping planets in orbit around the Sun.
What is Gravity?
This star appears nearly motionless in the night sky because it sits almost directly above Earth’s rotational axis and helps with navigation in the Northern Hemisphere.
What is Polaris?
These integers have exactly two factors. Examples include 2, 3, 5, and 7.
What are Prime Numbers?
Slowly moving masses of ice form that over many years from compacted snow. They store the majority of Earth’s freshwater supply.
What is a Glacier?
This metal is used to coat steel in galvanization and forms brass when alloyed with copper.
What is Zinc?
These massless particles travel at the speed of light and carry electromagnetic energy
What are Photons?
This well-known belt in the night sky is formed by three bright stars lined up in a nearly straight row and helps observers locate other celestial objects.
What is Orion's Belt?
These immune system cells attack pathogens like bacteria and viruses. Their types include lymphocytes and neutrophils.
What are White blood cells / leukocytes?