7Th Grade Science Words

Front 1

absorb

Back 1

to soak up
Commercials for paper towels brag about how they absorb spills.

Front 2

acquire

Back 2

An organism is born with certain traits and acquires certain traits.

Front 3

adapt

Back 3

to change in response to new circumstances
When we got our new science teacher, mr. Beak, we had to adapt to his weird ways.

Front 4

adhere

Back 4

to stick to
Scotch tape adheres to paper quite well.

Front 5

axis

Back 5

the center around which something rotates.
The Earth rotates on its axis.

Front 6

catalyst

Back 6

a substance that speeds up a chemical reaction
Fire is a catalyst for turning water into vapor.

Front 7

classify

Back 7

to group organism into categories according to similar characteristics
I would classify Mr. Beak as weird, but Mrs. Corpus as cool.

Front 8

collision

Back 8

the slamming of one thing into another.
When there is a collision between an opponet's bat and my best pitch, that is not good.

Front 9

combustible

Back 9

flammable
My science teacher tells us when a material we are working with is combustible.

Front 10

component

Back 10

a part of a system or machine
The components of my stereo are the receiver, CD player and five speaker surround system.

Front 11

compress

Back 11

to squeeze
When compressed enough, a soccer ball finally goes boom.

Front 12

conservation

Back 12

to protection of natural resources
Conservation is important if we are to keep the few natural wonders this country has left, like the Grand Canyon.

Front 13

decay

Back 13

to rot, break down
When you die, unless you have yourself frozen or are cremated, your body will decay.

Front 14

deplete

Back 14

to use up
One of the main problems today is the gradual depletion of Earth's resources.

Front 15

deposit

Back 15

to leave
Rivers and streams deposit sediment as they wear away the earth they run through.

Front 16

deteriorate

Back 16

to get worse
He is trying not to let his health is deteriorate.

Front 17

dissolve

Back 17

to mix with a liquid
Kool Aid dissolves in water to make a tasty, refreshing drink.

Front 18

dormant

Back 18

sleeping, inactive
Lots of animals, insects and plants go dormant over the winter, sleeping until spring.

Front 19

equilibrium

Back 19

a condition in which all forces cancel each other out, resulting in balance
Equilibrium happens when opposing forces are equal.

Front 20

evolve

Back 20

to change for the better
The theory of evolution is based on the theory that animals evolve to take advantage of their environment.

Front 21

extinct

Back 21

no longer in existence,
The dodo bird is extinct.

Front 22

gene

Back 22

a section of a chromosome that controls how part of an organism turns out
Your genes control your eye color.

Front 23

heredity

Back 23

the passing down of traits from parents to offspring
Your hair color is determined by heredity.

Front 24

ignite

Back 24

to light on fire
when you ignite your Bunsen burner in science class, it gives off a blue flame.

Front 25

immune

Back 25

being resistant to something
When you are sick your immune system is working overtime.

Front 26

incinerate

Back 26

to burn until there is nothing left but ashes.