structure and properites of matter
what is a atom
smallest unit of matter
conduction
heat through direct contact
newton first law
object stays at rest or in motion until acted on by an unblance force
what is weathering
breaking down of rocks by physical or chemical processes.
what is mutation
changes in DNA sequence new genetic variation (not always harmful)
What is a molecule
group of bonded atoms smallest unit of a compound
convection
heat through fluid movement
newton 3 law
for every action there is an equal and opposite reaction (rocket launch)
what is nucleus
controls cell activities and stores DNA
what is evolution
how species change over time through natural selection
density
mass per unit volume -D=/V
radiation
heat through electromagnetic waves (sunlight)
balance forces
equal, opposite forces = no change in motion
what is natural selection
organisms with better suited traits survive and reproduce more
VERY BAD LUCK TWO QUESTIONS WHAT IS A PRODUCER AND WHAT IS A FOOD CHAIN
A PRODUCER MAKES FOOD VIA PHOTOSYNTHESIS.FOOD CHAIN PRODUCES - CONSUMERS (NOT DECOMPOSESERS FIRST)
chemical change
new substances from with different properties (burning wood) chemical change is that it cant go back to the to the original state
potential energy
stored energy due to the position or condition (stretched rubber band)
newton 2 law
F=ma- more mass = less acceleration with same force
BAD LUCK TWO QUESTIONS.WHAT IS GRAVITY. WHAT IS EROSION
1.FORCE ATTRACTING OBJECTS TOWARDS EARTH CENTER 2. WIND/WATER WEARING AWAY ROCK AND SOIL OVER TIME
what is a consumer
eats other organism for energy
TWO QUESTIONS what is physical change and what is the conservation of energy
form changes identity stays with the same boiling water
TWO QUESTIONS WHAT IS THE CONSERVATION OF MASS AND KINECTIC ENERGY
MASS IS NEVER CREATED OR DESTORYED IN A REACTION
ENERGY OF MOTION-INCREASES WITH SPEED AND MASS
TWO QUESTIONS WHAT IS UNBALANCED FORCES. WHAT IS FRICTION
1.CAUSE ACCLERATION (CHANGE IN SPEED OR DIRECTION) 2.FORCES OPPOSING MOTION.
what is a earthquake
occur at tectonic plate boundaries (lithosphere)
apex consumers