How Well Do You Know Your Science Vocabulary?

By: Lauren Lubas
Estimated Completion Time
4 min
Hypothesis When running an experiment, what is your hypothesis?
Your educated guess
As you formulate an idea for an experiment, one of the first things you come up with is your hypothesis. A strong hypothesis will be completely testable and have a clear answer by the end of the experiment.
The data you collect
The results you see
The amount of time the experiment takes

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Cells Do you know what the smallest part of an organism is?
Organ
Cell
Every organism has cells, and every cell is a miniature factory that has a specific function within that organism. Cells reproduce to help the organism regrow or regenerate as well.
Nervous system
Brain

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Cat selfie Do you know the simplest definition for a vertebrate?
An animal without a spine
A single-celled organism
An animal with a spine
The animal kingdom can be divided into two different categories: vertebrates and invertebrates. Vertebrates include birds, mammals, reptiles and fish, while invertebrates include worms, crustaceans and many insects.
Every animal ever

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Blue eyes brown eyes If both of your parents have blue eyes, and you have brown eyes, what happened genetically?
Dominant reproduction
Recessive trait
Punnet square
Mutation
Genetic mutations occur quite frequently but can often go unnoticed. This usually occurs when there is an alteration in the genetic code that produces a new trait that the two parents did not have.

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Finch Can you tell us what a phenotype is?
The observable characteristics an organism has
While many of us can't tell what is going on in a person's body, we can observe specific characteristics about them. For example, you know what color their hair, eyes and skin are with a simple observation.
The unseen characteristics an organism has
It's another word for recessive trait.
It's another word for zygote.

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Offspring What is the grid used to determine possible combinations of offspring called?
Mendal's Triangle
Punnett Square
Each individual has two alleles that can determine the result of the offspring. When you create a grid with both parent organism's alleles, you can determine the odds of creating an offspring that looks a certain way.
Gene Box
Marker Notation

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Freezing The lowest temperature possible is what?
0 degrees F
12 degrees C
Absolute zero
Organisms, gasses and pretty much everything else needs heat or energy to stay in motion. At absolute zero, everything freezes and all motion stops. The temperature for this is 0 degrees Kelvin, or around -459.67 F.
Hyperfressia

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Solar system Which of these best defines a solar system?
All of the stars in a galaxy
The moons of a planet
Planets without a star
A star with the planets orbiting it
Not every star you see in the night sky is actually considered a solar system. To be a solar system, a star must have planets orbiting it. Science have identified over 2,500 other stars that would be considered solar systems.

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Earth's core Do you know what the innermost layer of the Earth is called?
Core
Although many are trying to access the Earth's core, no one has succeeded yet, and we have yet to sample it. However, we do know that it makes up about 20% of Earth's radius and is molten hot.
Mantle
Crust
Plate tectonics

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Tectonic plates When two tectonic plates collide, what happens?
Volcano
Earthquake
When you feel a sudden shake or violent jerking motion on the ground, you are experiencing an earthquake. These usually happen near fault lines where tectonic plates are rubbing against each other.
Hydraulic cycle
Inertia

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Precipitation Which of these is precipitation?
Lightning
Volcanic activity
Rain
Precipitation occurs when the condensation in the water in Earth's atmosphere that gets heavy enough to fall. This can come in many forms, including rain, snow, sleet, hail and graupel (frozen snow pellets).
Earthquake

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Whales with iceberg Do you know what climate is?
The daily weather conditions in a region
The cloud formations of a region
The volcanic activity of a region
The average weather conditions of a region
A common misconception is that weather and climate are the same. However, the climate is more of an average of a very long period of time, whereas weather can change on a daily basis.

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Eclipse When an eclipse occurs, what happens?
One object is blocked by another
While there are many different types of eclipses, there are two that we are most familiar with: lunar and solar. A solar eclipse is when the moon covers the sun, and a lunar eclipse is when the Earth blocks the moon from the sun.
When the sun fades away
When the moon is waxing
When the moon is waning

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Evaporation What is happening when a substance changes from a liquid to a gas?
Freezing
Evaporation
When a substance is heated enough, it becomes a gas. This is called evaporation. The easiest and most common way to see this is when you boil water on your stove. The water boils and bubbles because the water on the bottom of the pan is evaporating and needs to escape.
Mircoannessia
Nucleoregeneration

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Habitat Can you define habitat?
The plant life where a species lives
The estimated living cycle of a species
The environment a species is usually found in
The natural habitat of a species generally has everything that species needs to survive. For the most part, species have evolved and adapted to live in the environment they consider their natural habitats.
The moon of a planet

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Periodic table The average weight of one atom of an element is known as what?
The mass
The density
The whole weight
The atomic weight
The periodic table of elements shows every element known to humankind. It is organized by the atomic weight of that element, which is usually represented by the number underneath the atomic symbol.

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Boiling point Do you know what a boiling point is?
The temperature at which a substance becomes a gas
Once a substance begins to boil, it turns into a gas or vapor. The temperature at the time of this transition is known as the boiling point. Boiling points generally vary by substance, but the majority of substances require high temperatures to boil.
The temperature at which a substance becomes a solid
The temperature at which a substance freezes
The temperature at which a substance is in its natural state

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Constellation What is the term for a group of stars that makes a pattern in the sky?
Cluster
Constellation
The stars that we see from Earth create different constellations than you'd see from other planets. These constellations were used in early exploration as well as keeping track of the calendar.
Nebula
Viscous

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Friction When two surfaces slide against each other, what do you call the resistance that is felt?
Viction
Diction
Friction
Friction is also a way to describe how two surfaces interact with one another. Using friction can create heat or it can change one of the objects, depending on the object that it is rubbing against.
Fission

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Gravity Do you know the scientific term for when one body is attracted to another?
Mass
Exertian
Inertia
Gravity
When it comes to physics, you can usually define gravity as one object being pulled by another object. For example, the sun's gravity keeps the Earth in orbit, while the Earth's gravity keeps the moon in orbit.

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Evolution Can you tell us the definition of evolution?
How a species changes to adapt
Although there is a debate as to whether or not evolution is real, it has been proven over the years, and species are still evolving to match their changing environments. This is a way to continue life, despite the conditions.
How a species remains the same, despite conditions
How a species grows from baby to adult
How a species is developed before birth

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Mitochondria This pat of the cell converts glucose into energy. What is it called?
Fitochondria
Mitochondria
The cells in your body function very much like microscopic factories. Scientists discovered that the mitochondria within a cell functions as the place where both respiration and energy production happen.
Phynomisis
Photosynthesis

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Black hole In space, what do you call a concentration of mass so dense that even light cannot pass through it?
Gas giant
Solar system
Black hole
Black holes are incredibly difficult to study, but astronomers have been fascinated by them since they were first discovered. It is believed that a black hold is formed after a star dies.
Gravitational pull

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Light year Do you know what a light-year is?
How long it takes light to travel from Earth to the moon
The amount of time it takes to generate light from electricity
The amount of light necessary to travel from Earth to the moon
The distance light travels in one year
Light travels very fast. The distance that light, or something traveling at the speed of light, travels in a year is about 6 trillion miles. When broken down, this comes to around 186,000 miles per second.

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Erosion What do you call it when something is worn down by wind, water or ice?
Erosion
Erosion is constantly occurring, and it changes the shape of land as well as the direction a river flows. Erosion even created several large geological formations around the world, including the Grand Canyon.
Igneous
Fault
Epoch

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Epoch A period of time that is shown in layers of rock is known as what?
Erock
Epoch
Because it takes such a long time for geological layers to be created, epochs are used to help scientists decide the age of certain geological structures and formations. The current epoch is known as Holocene, and we are about 11,500 years into it.
Elnock
Romoc

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Rift Can you tell us what a rift in the Earth's crust is?
A location where the crust is being pushed together
A location where the crust is remaining the same
A location where the crust is being pulled apart
Rift zones are where two tectonic plates are pulling away from each other. These rifts create long cracks in the Earth's crust and can cause amazing geological occurrences. For example, Lake Baikal is the deepest lake in the world because of the rift zone it's in.
A location where the crust is getting larger

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Butte In geography, what is a butte?
A river that flows under water
A mountain with no trees at the peak
A volcano that is inactive
A hill with a flat top
For those of you who have never lived in the American Southwest, to imagine a butte, think of those large geological structures that look like red and brown buildings that you see on Roadrunner and Wile E. Coyote cartoons.

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Archipelago How do you define archipelago?
A series of islands that are connected underwater
The Glapagos Islands, the Hawaiian Islands and the Florida Keys are all chained islands that are connected underneath. Many archipelagos are volcanic chain islands that are created from volcanoes under the ocean.
A series of channels that connect other waterways
A single island in a bay
A small island on a river

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River source The place where a river begins is known as what?
Stop
Source
The sources of rivers are also known as the headwaters. Even the largest rivers, such as the Mississippi River, have sources that are rather small. When other rivers feed into these large rivers, they become wider and deeper.
Delta
Sediment

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Magma In volcanic terms, do you know what magma is?
Molten rock above the Earth's surface
An eruption
Molten rock under the Earth's surface
Magma is always under the Earth's surface. Once it breaks through the Earth's surface and reaches the air, it is then called lava. When volcanoes erupt, magma is usually expelled and becomes lava.
Pressure under a volcano

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Glacier Do you know what a glacier is?
A large piece of ice that floats on the sea
A river that has a bridge
A pond that has frozen over
A large sheet of ice that moves across land
Glaciers can move fast or slow. They can go up to 30 meters per day or as slow as a half a meter in a year. It can take hundreds of years for a glacier to form, as it requires more snow and ice than melts off every year.

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Embryo Can you tell us what an embryo is?
Unborn offspring
Once the egg is fertilized, it becomes a zygote. As that zygote develops, it becomes an embryo. At the stage of development, the being cannot live on its own, as it doesn't have functioning organs.
Pregnant mammal
Unfertilized egg
A birthed mammal

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Pistil What are the female organs of a flower called?
Pith
Pistil
That's right! Flowers have sexual organs, but both male and female flowers can be found on the same plant. There are male flowers and female flowers. A pistil is made up of the stigma, style and ovary of a flower.
Stamen
Glands

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Brain scan In biology, do you know what an organ is?
Part of an organism that has a specific function
The human body has over 100 organs that all have very specific functions. Some of these functions are more important that others, but some functions aren't necessary, and removing organs is not unheard of.
It is a musical instrument.
The location of genomes
A rock formation that has been eroded

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