The Gatekeeper of Cells

What structure allows only certain things to pass in and out of the cell. 
How is the structure different between plants and animals?



Something to think about 
Why are single celled organism so small? Why don't we ever see hippo sized single celled organism ? 

Two Plant Cells

Cells can be similar yet different.

Fig 1. Potato Cells 

Fig 2 Tomato Cells 

What do you see as the same and what do you see is  different between the tomato and the potato cell? 

Can you pick out an organelles ? 

Also keep in mind the color was added to make the cell more visible.

Cells and Video Responses

Watch the Videos and post vocabulary words you heard used in the videos and at least two facts from each video.

Cell Video 1

Cell Video 2

Cell Types

What is the difference between prokaryotic and eukaryotic cells ?

What type of cells are humans made up of? 

Hint 

Page 41 Life's Structures and Functions

Cells or Not Cells

A. Name five things that are made up of cells and three things that are not. 
B. Explain your thinking. Describe the rule or reason you used to decide whether something is or is not made up of cells. 

Changing Surface of the Earth

This school year we have studied the changing surface of the Earth. 
Please give examples of abrupt ( fast) and slow changes to the surface of the Earth. 

A minimum of one paragraph is need to complete this assignment. 

Please do your own work in your own words. 

This post will be a separated graded assignment. 

Surface , Ground and Ocean

Surface water, ground water, and ocean shoreline are the three main topics for chapter four. Please write a post that tells how these three concepts are connected. Also do you see how they are related to the three erosional forces we studied in chapter three and the two types of weathering. Your post should have at least five well written sentences. 

Rocks Rocks Rocks

We know that rocks erode and weather becoming smaller and smaller. 

What do you know about any specific types of rocks? 

seasons and sunlight

What causes the seasons that we have?
Study the diagram and what the video and write a well thought out post about seasons.
You must write a response in your own words.

seasons video

Rocky or Sandy

Why are some shore lines rocky and others have sandy beaches ? 

High Tides

Hopewell Rocks 

The rocks in this picture are found on the coast of Canada.  How do you think these structures were formed? Research how high the tides are at Hopewell compared to those in Portland Maine. 

Beach Sand

What materials do you think make up beach sand? 
How do these materials end up on the beach ? 

subsidence

Why would the ground level in these pictures sink or collapse after pumping out water?

What type of rock probably underlies an area where something like this occurs ?

Wells and Ground Water

Why might you be concerned if developers of a new housing project 

started drilling wells near your well?

Please click  on the  link and take the  ground water quiz on the USGS page .

Ground Water Info and Quiz

Ground Water

What is groundwater ?

What sort of Pollution could affect ground water? 

Please Check out the link for more information 

Ground Water Link

Natures Hot Tub

Imagine you are a Japanese macaque and it's a cold snowy day. What do you do ?
If your lucky you live near a hot spring where you could find a warm refuge from
the winter storm. The Japanese macaque lives further north than and other ape or monkey. 
How can you tell the water in this spring is hot?
Where do you think the water in the hot spring comes from?
Please make your own post and reply to one other about the hot springs.

River Flooding

What causes rivers to flood ? Explain what dams and levees are and how they relate to flooding? 

RIvers Old or Young

One of the oldest rivers in the United States is the New River.

These are some pictures of the New River.

What evidence do you see in the pictures that make it look like and old river. 

Research at least two facts about the New River and included them in your post 

with your source cited.