Transcript Bellwork 9-17-14

Bellwork 9-16-14
Pick up a Need to Know sheet from the back
counter. Begin working silently.
When you finish, take out your study guide.
Agenda
1. Bell Work (Need to Know)
2. Vocabulary Review
3. Study Guide
4. Inquiry & Engineering Review Game
5. Exit Ticket
What questions do you have?
Let the games begin!
 Every group will send one player for each question.
 Everyone in your group has to answer before you can answer
again.
 Every group gets 1 point for a correct answer. The group
who has the correct answer first will receive 2 points.
Question 1
• In the Scientific Method, what step
comes after Research?
• Hypothesis
Question 2
• What would an engineer do
after they have brainstormed
possible solutions and decided
on a solution?
• Create a prototype
Question 3
• What is a controlled experiment?
• An experiment that tests only one
factor at a time.
Question 4
• What is included in the
conclusion of an experiment?
• They hypothesis is compared
with the actual results.
Question 5
• What is an independent variable?
• The variable the scientist chooses
to change in order to test a
hypothesis.
Question 6
• What is a control factor?
• A part of an experiment that
stays the same for each group.
Question 7
• What is a dependent variable?
• The result of an experiment. A
change that occurs because of the
independent variable.
Question 8
• A scientist investigates the effect of
carbon dioxide on plant height. The
scientist grows plants in several closed
containers. All the plants receive the same
amounts of water and light, but the air in
each container has a different amount of
carbon dioxide. What is the independent
variable in this experiment?
• The amount of carbon dioxide in each
container.
Question 9
• A 7th grader is working on a science fair project
in which she is testing to see the affects of
caffeine on her teammates heart rate. She chose
five of her teammates to help with her
experiment. She gave each student a different
amount caffeine, waited 10 minutes, then
measured and recorded their heart rates. What
is the dependent variable?
• The heart rates
Question 10
• What tool should you use to
compare the masses of two mineral
samples?
• A triple beam balance
Question 11
•
A student rolled a toy car down a ramp and timed how
long it took to reach the bottom. After on trial, the
student doubled the height of the ramp and added
sandpaper to its surface. The student conducted three
more trials. After reviewing the data, the student
concluded the height of the ramp had no effect on the
speed that the car traveled. Which is the most likely
reason this conclusion is flawed?
• Too many variables were changed.
Question 12
• What is a prototype?
• A testable model. The first
working model of a product that
can be tested and improved upon.
Question 13
• Medical researchers are developing a wireless blood
pressure monitoring system for use in hospitals. This
system allows nurses to measure a patient’s blood
pressure without awakening the patient. Which is the
intended benefit of this technology?
A Patients will not be disturbed.
B Patients will have to take fewer medications.
C Patients can experience pain relief.
D Patients can avoid having surgery.
Question 14
• Which of these is an unintended consequence of the
development of the automobile?
A faster transportation
B increase in available energy
C decrease in air pollution
D increase in air pollution
Question 15
• A cochlear implant is a device that can be used to
restore hearing in some deaf people. What type of
technology is a cochlear implant?
A biofuel
B adaptive device
C assistive device
D prototype
Question 16
•
Which is the best example of an adaptive
bioengineered product?
A sugar can that is processed to make fuel
B mules that are bred from horses and donkeys for farm
work
C ladybugs that are raised to eat garden pests
D eyeglasses that are used to correct near-sighted vision
Question 17
• Give an example of an assistive
technology. Why is it assistive?