8/9/2019 Focus - SIN 401 and 403

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Name:

Focus: SIN 401 &403

SIN 401 = Understand methods & tools inmoderately complex experiment

SIN 403 = Identify the control in an

experiment

Do Now: Answer Questions 1-4

PASSAGE I

Students explored the difference between

series and parallel circuits by trying different

combinations and observing the effect on thevoltage and currents. Different metals

conduct electricity at different rates, so the

students tried using different types of wires

as well. To prevent a short circuit, a simple 1

ohm resistor was used in each trial. A

multimeter was used to measure current,

and batteries of the given voltage were used

for each trial

Table 1

Material Electrical

Conductivity

(s m^-1)

Gold 45.2 x 10^6

Silver 63.0 x 10^6

Sea Water 4.8

Aluminum 37.8 x 10^6

Copper 59.6 x 10^6

1. What is a control?

2. A moderately complex experiment

usually has 2 pairs of independent

dependent variables. What are the

two pairs in this experiment?

Independent Dependent

3. What was the purpose of this

experiment?

4. What can be concluded from Figure 1?

FOCUS 1: SIN 401

Each item used in an experiment has a

function. If it didnt, it would be pointless to

buy it and include it.

The function of each item is usually related

to 1 of 3 things:

(notes)

5. Make a list of the materials and their

functions.

Material Function

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6. Now look back at your list of materials.

Which ones are related to changing

independent variables?

7. Which ones are related to measuring a

dependent variable?

8. Which ones are related to keeping

everything else the same or

controlled?

9. Do you have any other materials listed

that are NOT related to the variables

or controls? What are they?

Try these SIN 401 Questions

Mark the key words in eachquestion and answer choice.

10.Why was more than one type of

battery used?

a. To test the consistency of each

battery

b. To change the current

c. To change the voltage

d. To complete different circuits

11.Why were gold, copper, and silver

wires used in the experiment?

a. they are the cheapest metals

available

b. they are good conductors

c. they can be easily bent

d. they can be bought in most

stores

12.Which of the following would cause

the data to be unreliable?

a. different resistors in each trial

b. doing all the trials at the same

temperature

c. using the same battery brand

d. different wire materials in each

trial