Why Be Curious?

What Does It Mean to be CURIOUS?

My Question

I have always wondered about WATER.

How Might We Measure How Strong

The Force is that Keeps Water

Together?

Surface Tension

http://ice.chem.wisc.edu/Oil/On_The_Surface,_Its_All_About_Nano/Surface_Tension.htm

l

https://www.youtube.com/watch?v

=RphuMEUY3Og

https://www.youtube.com/watch

?v=NVtPAaPRB3w

https://www.youtube.com/watch?v=

Hm52rkh68JA

Our Turn

What do we need?

● Water

● Pepper

● Soap

https://www.youtube.com/watch?v=0nx19B7TD0Q

Experiment Time

Research:

Find out about Surface Tension.

Write out about or draw pictures that show

SURFACE TENSION.

Hypothesis

What we guess might be the answer….

-could be based on past experiences

It does not matter if it is right or wrong...it is a

starting place.

We can then find out by experimenting!

Tools

● Penny

● Pippette

● Water

Record DATA

Trial # Number of Drops

1

2

3

Record by Drawing “What You See”

Top View Side View

What were some of our numbers?

Trial # Number of Drops

1

2

3

Why do we have such different

numbers?1. Errors will always happen.

2. Even if we try to repeat the exact same

experiment under the exact same conditions.

What do Errors come from?

1. Errors will come from your technique in doing

the experiment, so we must try to make these

errors as small as possible

What do We Do?

Take an AVERAGE.

What is an average?

Add up your numbers and divide by how many

numbers you added together.

Example: 4 + 3 + 5 + 4 = 16

16 divided by 4 = 4

Let’s Try

Numbers to Add:

Total, Divided by 3.

Graphing

Describe

Scientist ALWAYS describe what they found

out from this experiment.

Use your word bank to describe1) What you did

2) What you saw

3) What was your average number of drops

4) Was your HYPOTHESIS close or not...How much?

If you could redo?

What questions would you be CURIOUS to try

and figure out next time?

1)

2)