Minerals and Rocks Unit Week 16 Directions 1.Prepare your desk for science. 2.Use voice level 0 (no voice) to read textbook pg Think about what minerals are and what we learned about them yesterday.

Targets & Warm Up Targets: Students will use physical properties to identify minerals. Warm Up: What is a mineral? What did we learn about minerals yesterday?

Minerals Video (2 minutes) Questions to consider: What is a mineral?

Table of Contents DateTitlePage Minerals48 Once you are finished with the Table of Contents, go to page 48 and add the title and date to the top of the page.

Minerals Natural, nonliving solid crystals that make up rocks Each mineral has crystals that are a particular shape

Minerals Scientists have identified over 3,000 minerals Most of the rocks in the Earth’s crust are made from only a small number of minerals

How to Identify a Mineral To identify a mineral, scientists test some of its physical properties A physical property is a characteristic of a substance that can be observed without changing the substance

What physical properties can you use to describe this apple?

How to Identify a Mineral Physical properties scientists use to identify minerals: Color Luster Streak Hardness

Identifying Minerals Video (4 minutes & 30 seconds) Questions to consider: How do scientists identify minerals?

Color The first thing someone notices Not a reliable property – Many minerals have different colors – Some minerals' colors are the same as other minerals' colors Rose quartz Clear quartz Smoky quartz

Color Feldspar minerals make up more than half the minerals in Earth’s crust. They are often pink or white. The color of mica, a common mineral, ranges from tan to almost black. Feldspar Mica

Words to describe color Red Light gray Black Mixed colors White Pink Yellow Dark gray Clear

Luster Luster : The way a mineral’s surface reflects light Dull (earthy): not shiny or reflective Metallic: the look of metal, very shiny Pearly: the look of a pearl Glassy: looks like glass Greasy: the look of grease Silky: the look of silk

Mineral Luster Video (2 minutes) Questions to consider: What do each of the lusters look like?

Metallic Glassy Pearly Dull

Your Task What are the colors and lusters of the minerals in front of you?

Reflection Questions What physical properties do scientists use to identify minerals? What physical properties are observable with your eyes? What physical properties need to be done in a hands-on test?

Targets (Revisited) Targets: Students will use physical properties to identify minerals.

Homework SubjectHomeworkDue Date ScienceNone