Atoms
Cells
Forces and Motion
Simple Machines
Sound, Heat, and Light
100

a small area in the center of the atom where most of an atom's mass and positive charge is concentrated 

what are nucleus 

100

contains the cells DNA and is the control center of the cell

what is nucleus 

100

a force that slows or stops motion when objects rub together or move past one another 

friction 

100

stored energy

potential 

100

a disturbance that transfers energy from one point to another 

wave

200

positively charged particle within the nucleus 

what are protons

200

when plants make their own food

autotroph

200

the overall force acting on an object

net force 

200

energy that is moving 

kinetic 

200

peak or highest point of a transverse wave

crest 

300

a neutral atom that gains or loses an electron which makes it no longer natural 

Ions 

300

the site where oxidation respiration takes place

mitochondria 

300

for every action, there is an equal and opposite reaction 

newtons third law of motion

300

how much force you use over time

Work

300

medium causes the wave to speed up or slow down, making the wave bend running through the air than water 

refracted 

400

the first element in the periodic table

hydrogen 

400

site where amino acids are hooked together to make proteins 

ribosomes

400

when an object resists movement by force 

inertia

400

simple machines reduce the amount of force needed to perform a task but does not reduce the amount of energy or work needed to perform a task 

conservation of energy 

400

travels through empty space

electromagnetic waves 

500

number of protons + number of neutrons 

isotopes 

500

part of cell that uses solar energy to form ATP 

chloroplast 

500

inner core spins faster than the outer core causing _______ in which then a magnetic field is created 

molten iron to flow

500

_______ cannot be created or destroyed

Energy 

500

name 3 types of natural light

sun, stars, lightning 

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