Untitled Lesson

LO

¡LO: SWBAT define density and use appropriate tools to compare the density of substances relative to various
fluids.

¡

DOL: Given a set of problems, students will define density and use appropriate tools to compare the density of
substances relative to various fluids by answering at least 4 of 5 questions.

AGENDA

¡Students will complete physical properties of matter handout.

¡Complete the key ideas video

¡Fill in the blanks

¡Interactivity: Sink or float

¡Sort Card Activity:

DO NOW

A student is given a sample of liquid that appears uniform
throughout. After 2 hours, the student noted a white substance
settled at the bottom. What can you infer about the two substances?
See the image below.

DO NOW

¡Which substance is heavier? Explain your answer.

A)White substance is heavier than the clear liquid.

B)White substance is lighter than the clear liquid.

C)Clear liquid on top of the white substance is lighter.

D)Clear liquid on top of the white substance is lighter.

LESSON VOCABULARY

Density

Sink or float

KEY IDEAS VIDEO: 7 LAYERS OF DENSITY COLUMN

1)List all seven layers of substances in the density column, as demonstrated in the video.

2)What did you observe as the screw was dropped in the density column?

3)What patterns did you observe for the layers in terms of density?

https://youtu.be/KgZ7JtmOgHI?feature=shared

KEY IDEA: WHAT IS DENSITY?

Density is the mass
of a certain volume
of matter. (D=M/V)

If an object is more
dense than water, it
will sink. If it is less
dense than water, it

will float.

KEY IDEAS: WHAT IS DENSITY CONTINUED

Example 1: A piece of Cork floats in water because it is less dense

KEY IDEAS: WHAT IS DENSITY
CONTINUED

EXAMPLE 2: THE SCREW SINKS IN WATER BECAUSE IT IS MORE DENSE

INTERACTIVITY:
SINK OR FLOAT

¡ Explore the

Interactivity: Sink
or Float and
answer questions
1-5 on the
student activity
handout.

CFU – COMPARE AND
CONTRAST– DENSITIES
OF SUBSTANCES

¡The density of water is 1.00
g/mL.

¡Compare and contrast the
densities of water, a substance
that floats on water, and a
substance that sinks below
water.

¡In a group, discuss the densities
of the substances in the table.
What would happen to each
substance if you poured them
into ocean water?

PRACTICE

¡Write words or phrases from the word bank to
complete the paragraph.

¡

To compare the density of substances relative to
various fluids, you can see if they float or sink. If a
substance _________ on a fluid, it means it is
_________ dense than the fluid. If it _________ it
means it is _________ dense. For example, if a
plastic ball floats on _________ but sinks in oil, it
means the ball is less dense than water but more
dense than ________ .

¡

less

sinks

water

more

floats

oil

DENSITY : SEP DEVELOP MODELS- CARD SORT