unit 1

Question 1

what are observations used for?

Answer 1

observations describe things/objects, systems, processes, behaviors, etc.

Question 2

how is qualitative used?

Answer 2

observation that only describes characteristics or qualities using words; no numbers

Question 3

how is quantitative used?

Answer 3

observation that uses numbers to describe, typically a quantity or measurement (includes units)

Question 4

true or false: In science, we use the metric system of measurement [meter (m), kilogram (kg), liter (L), etc]

Answer 4

true

Question 5

what are all living things made out of?

Answer 5

all living things are made up of cells

Question 6

cells are-

Answer 6

the basic unit of all living things

Question 7

sexual reproduction–

Answer 7

cells from two parents

Question 8

asexual reproduction–

Answer 8

cells from one parent

Question 9

what are organisms determined by?

Answer 9

a universal genetic code called DNA

Question 10

living things can–

Answer 10

grow and develop, obtain and use energy

Question 11

where do plants get energy from?

Answer 11

from sunlight

Question 12

where do animals get energy from?

Answer 12

from the food they consume

Question 13

what is metabolism?

Answer 13

the chemical reactions through which organisms build up or break down materials

Question 14

organisms respond to their–

Answer 14

environment, a signal an organism responds to is the stimulus

Question 15

explain homeostasis

Answer 15

living things can maintain a stable (balance) internal environment

Question 16

evolution–

Answer 16

organisms change or evolve over time, this is called evolution

Question 17

what is the first step of scientific method?

Answer 17

observe and state the problem

Question 18

what is the second step of scientific method?

Answer 18

gather information

Question 19

what is the third step of scientific method?

Answer 19

form a hypothesis

Question 20

what is the fourth step of scientific method?

Answer 20

set up a controlled experiment

Question 21

what is the fifth step of scientific method?

Answer 21

record results

Question 22

what is the sixth step of scientific method?

Answer 22

analyze results

Question 23

what is the seventh step of scientific method?

Answer 23

draw a conclusion

Question 24

what is the eight step of scientific method?

Answer 24

publish results

Question 25

hypothesis–

Answer 25

educated guess or prediction about the outcome of the experiment

Question 26

theory–

Answer 26

hypothesis that has been supported by data many many times, by many many scientists

Question 27

some hypothesis eventually becomes–

Answer 27

a theory. theories explain a law, but never become a law

Question 28

law–

Answer 28

universal truth

Question 29

why do scientists carefully design their experiment?

Answer 29

to get valid and reliable data

Question 30

independent (IV)–

Answer 30

manipulated variable

Question 31

dependable (DV)–

Answer 31

measured variable