Transcript 7-1.2 Asking Questions and Forming Hypotheses

Asking Questions and
Forming Hypotheses
7-1.2 Generate questions that can be answered through
scientific investigation.
Bell Ringer
Name
Gardner
9-2-14
Class #
List of Questions
• Create a list of any 5 questions that
you would like to have answered
about the world around you.
Homework for the week:
Write down in your agenda
now!!!
•-Complete Scientific Method
Word Search and Crossword
Puzzle (References R28-R35)
•-Due 9-5-14
Essential Question
•How do scientific
questions differ from
other questions?
Objective
•Create a t-chart to
distinguish between
scientific questions and
nonscientific questions.
Standard
•7-1.2 Generate questions that
can be answered through
scientific investigation.
Discussion/Notes –Asking
Scientific Questions
•Go to our class page and copy
notes on “7-1.2 Asking
Scientific Questions” (Power
Point Slides Slides 8-11).
Asking Questions and Forming
Hypotheses- Notes
• Only testable questions (which
are used to test one independent
(manipulated) variable) can be
answered through a scientific
investigation and data collection.
Scientific Questions and Variables
•
The question should include the
relationship between the
independent (manipulated) and
dependent (responding) variable.
Testable Questions
• How does the amount of exercise affect heart
rate and breathing rate?
• The independent (manipulated) variable is the
amount of exercise (number of repetitions,
amount of weights, duration of exercise).
• The dependent (responding) variable, involving
two body systems interacting, are heart rate
and breathing rate.
Testable Questions
• How does the amount of clay in soil affect
permeability of water?
• The independent (manipulated) variable is
amount of clay in the soil.
• The dependent (responding) variable is the rate
of permeability of water.
Testable Questions
• Does the amount of baking soda added to
vinegar affect the amount of gas produced?
• The independent (manipulated) variable is
amount of baking soda.
• The dependent (responding) variable is
amount of gas produced.
Stop and Reflect• How are testable questions similar to the
questions you wrote down in your bell
ringer journal?
• How do testable questions differ from the
question you wrote down in your bell
ringer journal?
Ipad Connection
• Find the app. SHOW ME
• Write a question on the screen.
• Turn to your partner and ask them if it is a
scientific or nonscientific question.
• Now, the other partner will write a
question and have you infer if it is a
scientific or nonscientific question.
Writing Scientific Questions
• How does _________ affect _______?
• -Relate the sun and flowers
• Relate music and hearing
• Relate food and height
• Relate salt and boiling rate
Exit Ticket
•How do scientific
questions differ from
other questions?
Ipad Connection/Independent
Practice • Create a collage to distinguish
between scientific questions and
nonscientific questions.
• IPad Connection-Pic Collage
Bell Ringer
9-3-14
Analyzing Questions
• Create a t-chart made of 2 scientific
questions and 2 nonscientific
questions.
Scientific
Vs. Nonscientific
1.
1.
2.
2.
Independent Practice-Defining Terms:
• Define the following 6 terms using any
vocabulary strategy from pages R50R51.
• Scientific inquiry, scientific question,
observation, variable, independent
variable, and dependent variable
• References- Textbook R1-R35,
glossary, dictionary
9-4 Define 6 TERMS using a
vocabulary strategy –R50-R51
1. SCIENTIFIC INQUIRY- ASKING A SCIENTIFIC QUESTION;
BEING CURIOUS; LEARNING ABOUT THE WORLD
2. SCIENTIFIC QUESTION- A QUESTION THAT MUST BE
ANSWERED BY EXPERIMENTING; REQUIRES RESEARCH;
MUST BE TESTABLE
3. OBSERVATION-NOTICING AND RECORDING AN EVENT;
BASED ON CHARACTERISTICS, BEHAVIORS, NUMBERS OF
MEASUREMENT, AND/OR 5 SENSES
4. VARIABLE-THE PART OF AN EXPERIMENT THAT CHANGES
5. INDEPENDENT VARIABLE-CAUSE; MANIPULATED
VARIABLE; THE PART THAT CHANGES FIRST
6. DEPENDENT VARIABLE- EFFECT;RESPONSE; OCCURS AS A
RESULT OF THE INDEPENDENT VARIABLE
9-4 Define 6 TERMS using a
vocabulary strategy –R50-R51
6. DEPENDENT VARIABLEEFFECT;RESPONSE; OCCURS
AS A RESULT OF THE
INDEPENDENT VARIABLE
Essential Question
•What should a
hypothesis be
based on?
Objective/Purpose
•Compose
hypotheses from
scientific
questions.
Standard
•7-1.2 Generate
scientific questions
that can be answered
through scientific
investigation.
Bell Ringer 9-8-14
Write scientific questions based on the
following (SB):
1. Amount of sunlight and the growth
of plants
2. Type of fertilizer and height of grass
3. Bounce of a ball and the amount of
air
4. Type of music and behavior of
students
Notes on Hypotheses
•Copy notes 1-6 in the
notes section of your
science notebook.
•Time Frame: 10
minutes
Forming a HypothesisNotes-Start
1. A prediction about the
relationship between variables
is formed from the testable
question. This prediction is
called a hypothesis.
2. All controlled investigations
should have a hypothesis.
Forming a Hypothesis
3. A hypothesis can be stated positively or
negatively. For example,
A. The longer the duration of exercise, the faster
the heart and breathing rate. (positive
statement)
B. The more baking soda added to the vinegar,
the greater the amount of gas produced in the
reaction. (positive statement)
C. The more clay in the soil, the lower the rate of
permeability of water. (negative statement)
Forming a Hypothesis
4. A hypothesis can also be
stated as a cause-and-effect
(“If…then,…”) statement. For
example, “If there is more
sunlight outside, then the
growth of the apple tree will
increase.”
Forming a Hypothesis
5. The experiment is conducted
to support or not support a
hypothesis.
6. If the hypothesis is not
supported in the experiment, it
can still be used to help rule out
some other ideas.
Turn and Share
• Compose scientific questions using
the SHOW ME APP.
• Take turn creating
“If…then…statements” with your
partner.
• Be ready to share out your favorite
scientific questions and hypothesis
created when the timer goes off!
Independent Practice -Create a list of
“If…then…”statements based on the
following questions to be turned in:
1. How does the amount of air in a
basketball affect the bounce?
2. How does the type of music affect
plant growth?
3. How does the speed of a car affect
the damage during a crash?
4. How does the amount of food affect
the child’s height?
Review -Asking Scientific
Questions and Forming
Hypotheses
Which of the following is an example
of a scientific question?
a. Why is that dog limping?
b. How much time will it take us to get
to Charlotte, NC?
c. Where did you put the book?
d. What will happen if I add more salt?
1.
Review- Asking Scientific Questions and
Forming Hypotheses
2. What must be true of any
hypothesis?
a. It must be proven correct.
b. It must be testable.
c. It must not be based on
observations.
d. It must provide the answer to a
scientific question.
Review- Asking Scientific Questions and
Forming Hypotheses
3. What is the independent variable in the
question below?
Does the amount of moisture in a bag of
microwave popcorn affect the number of
kernels of popcorn that pop?
A. amount of moisture
B type of bag
C. number of kernels
D. method of cooking
Quick Recall
What should a
hypothesis be
based on?
A hypothesis should be based
on:
•OBSERVATIONS
•RESEARCH
•EDUCATED GUESS
•IF…THEN…STATEMENT
Exit Ticket
• Write an educated guess as an
If…then statement on a sticky
note.
• Put your 1st and Last Name and
class number on the back.
• Place on the Exit Ticket Poster on
your way out the door.