Question

Models need to be changed when _______.
a.
they are based on experimental data
b.
scientific understanding changes
c.
they represent a phenomenon
d.
they are designed to answer a question

Answer 1

i would like to say A kind sir

Answer 2

:D

Answer 3

am i correct?

Answer 4

idk yet i have to answer all my questions then submit on e2020

Answer 5

Safety equipment like fire extinguishers and fire blankets are used to prevent accidents
true or false

Answer 6

what question are you on now?

Answer 7

false they are used to help accidents not prevent then

Answer 8

Following proper safety guidelines _______.
a.
minimizes the chance of accidents occurring in lab
b.
involves using a fire extinguisher
c.
prevents accidents from occurring in lab
d.
requires using a safety shower

Answer 9

and do you know what e2020 is

Answer 10

no kind sir i do not believe i do

Answer 11

C

Answer 12

Scientists use critical thinking skills throughout the process of research or experimentation. A student notices that their energy level always seems to decrease when they drink soda, but they seem to have more energy when they don’t drink soda. The student decides to conduct an experiment to determine if their soda intake really does have an effect on their energy level. What critical thinking step has the student just completed in the situation described above?

a.
Asking a question
b.
Evaluating a promotional claim
c.
Adjusting a conclusion
d.
Determining a logical conclusion

Answer 13

i would say B

Answer 14

The main purpose of models is to gain a better understanding of the world
true or false

Answer 15

i wouldn't say the world perhaps but models do help you understand thing sir i would choose true$

Answer 16

Which of the following is not used to perform experiments with liquids?
a.
beakers
b.
flasks
c.
graduated cylinders
d.
rulers

Answer 17

D

Answer 18

The four major Earth systems are the atmosphere, lithosphere, hydrosphere, and geosphere.

true or false