FPC Day 7 Spring Lab Warm Up Glue

FPC Day 7 Spring Lab

Warm Up Glue the lab on the following pages Page 9 Page 10 Page 11

Agenda • Quick notes on Independent, Dependent and Controlled Variables – Homework due next class period! • Start Spring Lab

Learning Targets

Cornell Notes Title: Variables • Independent Variable (manipulated): What we change in an experiment • Dependent Variable (responding): what we measure in an experiment, the data • Controlled Variables: everything else that may effect the experiment

Practice • You notice a book dropped from different heights creates a sound of different intensity. So you ask “How does the book dropped from different heights affect the intensity of sound when it hits the ground? ”. • The independent variable: _______ • The dependent variable: _______ • What are the controlled variables:

Stretching Spring Experiment • Wild Guess: How far will the spring stretch if this amount of metal is added to the spring? • Research Question: (what are you investigating) • How does the mass hung from a spring affect the stretch of the spring?

Stretching Spring Experiment • Variables: 1. independent variables: identify and list (the ones you are changing) 2. dependent variables: identify and list (the ones you are measuring) 3. controlled variables: identify and list (all variables not listed above)

Stretching Spring Experiment • Hypothesis: (what do you expect to happen) 1) sketch in graph form (think about what would happen to the stretch if you doubled or tripling the mass) 2) in words “I think the mass affects the stretch of the spring in a ______ relationship”

Stretching Spring Experiment • Method: Drawing – Make sure to label the variables

Data: IV: Mass Hanged (g) +/- 5 Plotted as X on Logger. Pro 0 20 40 100 200 Length of Spring with Mass On (cm) +/- 0. 3 Lm Original Length of Spring (cm) +/- 0. 3 LO DV: Stretch of Spring (cm) +/- 0. 6 Plotted as Y on Logger. Pro

Roles Materials Manager: collect, take care of, and put away all lab materials (or ask someone nicely) Reporter/Recorder: make sure everyone is collecting data/finishing the lab Peace Keeper: including everyone in the conversation, asking questions, keeping people on task Team Captain: getting things moving, watching the time, make sure everyone is working

Make sure you are measuring the difference in the stretch!