famigletti 1st semester exam science review
Terms
undefined, object
copy deck
- qualitative observation
- an observation made without numbers
- quantitative observation
- an observation made with numbers
- metric unit of mass
- gram
- metric unit of volume
- litter
- matric unit of distance
- mmeter
- metric unit of weight
- newtons
- definition of mass
- measure of the amount of matter in an object
- definition of volume
- amount of space something takes up
- definition of weight
- measure of the force of gravity on an object
- tool used to measure mass
- balance
- tool used to measure liquid volume
- graduated cylindar
- tool used to measure solid volume
- ruler
- tool used to measure force
- spring scale
- tool used to meassure length
- meter stick
- definition of manipulated variable
- factor that you can change
- definition of responding variable
- the factor that changes as a result
- definition of controled variable
- all but one variable is constant
- definition of ecosystem
- living and nonliving things in an area
- definition of habitat
- a place where an organism lives and provides things it needs to live
- definition of producer
- an organism that can make its own food
- definition of consumer
- organism that obtains energy by feeding off other organisms
- definition of decomposer
- organism that breaks down large molequels from dead organisms into small molequels and returns materials to the enviornment
- definition of food chain
- series of events where one organism eats another organism and obtains energy
- definition of predator
- carnivor that hunts and kills other animals for food and has adapttations to help it catch its prey
- definition of prey
- what a predator eats
- definition of pioneer species
- 1st species to populate an ecosystem
- definition of primairy sucession
- changes in an area where no ecosystem exists
- definition of secondary sucession
- changes i an area that occor after a disturbance in an ecosystem
- definition of energy
- the ability to do work and cause change
- definition of kinetic energy
- energy of movement
- definition of potential energy
- stored energy
- an example of kinetic energy
- toy spring unwings
- an example of potential energy
- lift a book from a desk
- metric unit of force
- newton
- metric unit of work
- m/s
- metric unit used to measure speed
- m/s
- 2 parts that make up a wheel
- wheel and axle
- three examples of work not being done
-
1. moving a car stuck in snow
2. holding books
3. holding something in place - what happens to an objects momentum if mass is increased
- momentum is increased
- definition of gravitational potential energy
- potential energy that depends on height of object
- definition of energy comversion
- changing fron one form of energy to another
- definition of respiration
- cells break down simple food molequels to release the energy they contain
- definition of photosynthesis
- plants and other organisms capture light energy and make other food from carbon dioxide and water
- what type of energy conversion happens during respiration
- chemical to thermal
- what type of energy conversion happens during photosynthesis
- electromagnetic (radiant) to thermal
- what is the shape of the moons orbit around the sun
- elipse
- at what angle is the earths axis tilted at
- 23.5
- why do some parts of the world have 4 seasons when others have 2
- some get more direct sunlight
- what are seasons on earth caused by
- the tilt of the earths axis