Here are some review websites that you may find helpful to help you study...
Scientific Method:
http://www.scholastic.com/teachers/activity/scientific-inquiry-4-studyjams-interactive-science-activities
https://www.brainpop.com/science/scientificinquiry/scientificmethod/
http://www.biomanbio.com/Quizzes/SciMethodsQuizzes/scimethquiz1.html
https://www.quia.com/quiz/2047034.html
http://www.biology4kids.com/extras/quiz_studyscimeth/
http://www.softschools.com/quizzes/science/the_scientific_method/quiz468.html
Metric Conversions:
http://www.sciencegeek.net/Chemistry/taters/Unit0Metrics.htm
http://chemistry.about.com/qz/Metric-To-Metric-Conversions-Quiz
http://cemc2.math.uwaterloo.ca/mathfrog/english/kidz/metric6E.shtml
https://quizlet.com/19247322/metric-conversion-practice-flash-cards/
Scientific Notation:
https://www.khanacademy.org/math/pre-algebra/pre-algebra-exponents-radicals/pre-algebra-scientific-notation/e/scientific_notation
https://ca.ixl.com/math/grade-7/scientific-notation
https://janus.astro.umd.edu/astro/scinote/
https://www.quia.com/quiz/113578.html
Scientific Method:
http://www.scholastic.com/teachers/activity/scientific-inquiry-4-studyjams-interactive-science-activities
https://www.brainpop.com/science/scientificinquiry/scientificmethod/
http://www.biomanbio.com/Quizzes/SciMethodsQuizzes/scimethquiz1.html
https://www.quia.com/quiz/2047034.html
http://www.biology4kids.com/extras/quiz_studyscimeth/
http://www.softschools.com/quizzes/science/the_scientific_method/quiz468.html
Metric Conversions:
http://www.sciencegeek.net/Chemistry/taters/Unit0Metrics.htm
http://chemistry.about.com/qz/Metric-To-Metric-Conversions-Quiz
http://cemc2.math.uwaterloo.ca/mathfrog/english/kidz/metric6E.shtml
https://quizlet.com/19247322/metric-conversion-practice-flash-cards/
Scientific Notation:
https://www.khanacademy.org/math/pre-algebra/pre-algebra-exponents-radicals/pre-algebra-scientific-notation/e/scientific_notation
https://ca.ixl.com/math/grade-7/scientific-notation
https://janus.astro.umd.edu/astro/scinote/
https://www.quia.com/quiz/113578.html