10/25 & 10/26 - 7th Grade Agenda

Learning Objective: Learn about CellsCollect: HW Reading Guide Chap 2 Section 2 & 4CellsLens & Mirror LabVideo: Science in Action “Cells”Class Reading p.80-85HW: Reading & Note Taking : p. 53 - 56HW: Cell Model due 11/7 & 11/8

Reflection

• Why do we see optical illusions? (Write the answer in complete sentence)

More Optical Illusions

Stare at this for 20 seconds & then I’ll switch to a blank slide

Which center circle is larger

Are they moving?

Convex Mirror

Concave Mirror

Convex Lenses

Concave Lenses produces smaller image

Gali_____’s Telescope

• He was the first man to observe the moons of Jupiter and craters on the moons with a telescope in 1608

leo

What is a Refracting Telescope?

• A telescope that uses convex le______ to gather a large amount of light onto a small area

nses

What is a Reflecting Telescope?

• A telescope that uses mi_______ to focus a large amount of light onto a small area

rrors

What is the difference between refracting and reflecting

telescope?

What is a Radio Telescope

• A telescope that uses curved, reflecting surfaces to concentrate faint ra_____ wa______ from outer space onto small antennas

dioves

Four views of the Crab Nebula using different telescopes

Microscope

• A Microscope uses a combination of le_____ to form enla_______ image of tiny objects

nsesrged

Electron Microscope

• Electron microscopes uses ele______ instead of li______ to produce a magnified image

ctronsght

Reflection

• How does an image appear in a concave mirror?

• How can you make the image appear upside down in a concave mirror?

• How does an image appear in a convex mirror?

The basic unit of structure and function in living things is called C_____ells

The invention of the mi_______ made it possible for people to discover and learn about cells

croscope

In 1663 Robert Hooke observed the structure of thin slice of c____

using com________ microscopeork

pound

Drawing of dead cork cells by Hooke

Cell Theory: All l______ things are composed of cells

iving

Cell Theory: Cells are the basic unit of str______ and f________

in living thingsucture unction

Cell Theory: All cells are pr_______ from other cellsoduced

Cell Model Project – 40 Points

• Due 11/7 & 11/8

• 3D Model of a cell.

• If it is just a drawing you will loose at least 10 points.

Cell Video

Lens & Mirror Lab

• Write 3 observations that you made in the Lens and Mirror Lab.