Wildlife Conservation Center New York Aquarium: 7th grade            

Weathering and the Composition of Sand

Grade Level:            7th Grade

Subject: Earth Science

Learning Standards:

New York State MST Standard 4 – Science, Physical Setting

NYS MST Standard 6 – Interconnectedness, Patterns of Change

NYS MST Standard 7 – Interdisciplinary Problem Solving

Time Requirements:

Pre-Visit Lesson = 45 minutes

Visit = 120 minutes

Topics Covered by This Lesson:

Weathering

Chemical

Mechanical

The Composition of Sand

Granite, Shells, Quartz, Slate, Feldspar, Magnetite, Mica, Hornblende

New York Aquarium

Pre-Visit

Purpose:

To understand what weathering is

To learn how weathering creates sand

To have the students become acquainted with the layout of the New York Aquarium (including the Coney Island shore) and what they will be doing there.

Objectives:

Students will learn what weathering is.

Students will brainstorm and list examples of weathering (both mechanical and chemical).

Students will learn how sand is created through weathering.

Students will become familiar with the layout of the New York Aquarium.

Students will understand what they will be required to do during their visit of the New York Aquarium (hand out the task requirements for their visit: information they will be gathering and questions they will be answering).

Materials Required:

Sand

Student Learning Prerequisites:

Students must have gone over some of the basic rocks before (such as granite, quartz, feldspar, slate, etc.)

Visit

Students will investigate the sand on the beach and explain how weathering caused it.

Students will try and figure out what the sand is mostly made up of on the Coney Island shore.

Students will try to find evidence of granite, quartz, feldspar, shells, slate, magnetite, hornblende, and mica in the sand.

Students will explain how the sand composition differs on varying parts of the beach and try to explain why.

Students will also determine if the sand contains iron by using magnets.

When they are done, students can visit any of the displays within the museum at their own leisure.

Post Visit

Assessment:

Verbally ask the students and review with them:

What is weathering?

What are some examples of weathering?

How is sand created?

What is sand made up of?

Make sure their answers are correct. If not, review it with them.

Also, go over their visit investigations and conclusions.

Extensions and Suggested Homework Assignments:

Give the students a piece of granite and have them try to use different weathering techniques (mechanical and chemical) to break down the rock.

Give the students sand from different beaches (black, pink, yellow, and white) and have them try to figure out what basic rocks or substances make up the sand.

Possible Questions:

Why do certain beaches have pink or black sand?

What is pink sand made up of mostly?

What is black sand made up of mostly?

What color sand do you think a beach near a volcano will have?

What type of sand has been “weathered” longer – coarse or fine sand?

What does a marine biologist do? How do you become a marine biologist?

 


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Last modified on: Tuesday, August 21, 2001