SlideServe
Télécharger Obtenir Pro
Menu
Accueil Pro
Préférences
ApparenceLight Aide et commentaires
© SlideServe · v2026

Experimental Variables and Measurement in Science

bethf avatar
bethf
308 diapositives · 3.1K Views · Nov 05, 2019

Learn about dependent and independent variables, control variables, qualitative and quantitative measurements, accuracy, precision, resolution, and errors in scientific experiments. Explore the basics of atoms, elements, compounds, mixtures, and particles.

#experimental variables and measurement in science #experimental variables and measurement in science ppt #powerpoint #presentation
Experimental Variables and Measurement in Science - slide 1
1 / 308

Télécharger la présentation

Experimental Variables and Measurement in Science
Une image / un lien ci-dessous est fourni (tel quel) pour télécharger la présentation

Politique de téléchargement : le contenu du site vous est fourni TEL QUEL pour votre information et votre usage personnel ; il ne peut être vendu, concédé sous licence ni partagé sur d’autres sites sans l’accord de son auteur.Le contenu vous est fourni TEL QUEL, pour votre information et votre usage personnel uniquement. Téléchargez la présentation en cliquant sur ce lien. Lors du téléchargement, si vous ne parvenez pas à télécharger une présentation, l’éditeur a peut-être supprimé le fichier de son serveur.Pendant le téléchargement, si vous ne parvenez pas à obtenir une présentation, le fichier a peut-être été supprimé par l’éditeur.

F I N

Plus de contenu associé

Transcription de la présentation

  1. Dependent Variable…’ = measured for each change in the independent variable

  2. Control Variables… = are kept the same as they are variables that may, in addition to the independent variable, affect the outcome of the Investigation.

  3. Control… = Something used in an investigation as a COMPARISON

  4. Qualitative… = not actually measuring An amount of something SUBJECTIVE, less accurate

  5. Quantitative… = actually measuring an amount of something MORE accurate

  6. Accurate… = close to the TRUE VALUE

  7. True Value… = the actual value we would get with an IDEAL measurement

  8. Precise… = results cluster closely Very little spread from Mean (average value)

  9. Resolution… = This is the smallest change in the quantity being measured of a measuring instrument that gives a perceptible change in the reading.

  10. Random Error… = errors due to results varying in unpredictable ways. These cause readings to be spread about the true value. These errors can be reduced by making more measurements and reporting a mean value.

  11. Systematic Error… • = results differing from the true value • by a consistent amount each time. • Cannot be dealt with by simple • repeats. The data collection • should be repeated using a • different technique or • a different set of equipment and • the results compared.

  12. = checked by INDEPENDENT Scientists to PREVENT FALSE CLAIMS ‘Peer Review’

  13. ATOMSmallest part of an element that can exist.

  14. ELEMENTSubstance consisting of only one type of atom.

  15. COMPOUNDTwo or more elements chemically combined in fixed proportions.

  16. MIXTURETwo or more elements or compounds not chemically combined together.(The chemical properties of each substance in the mixture are unchanged).

  17. Types of particles • Atoms • Protons • Neutrons • Electrons • Ions ( charged particles) • Metallic ( positive ions and negative electrons) • Molecules (simple and macro) • Nanoparticles

  18. Development of the model atomWhat do you need to know?

  19. 1 2 3

  20. How many neutrons???

  21. Atoms can be represented like this.....

  22. OR like this.....

  23. Remember the 2, 8, 8 rule....

  24. What charge do atoms have? How come?