Friday, April 19, 2013

Calculating Destiny

1. What do the following formulas mean?

Formulas for density

2. What conclusion might be drawn from the table below if an element has a mass of 150g and a volume of 10 cm3?
It is gold
 Substance Density-g/cm3 Gold 19.3 Copper 8.9 Aluminum 2.7 Iron 7.9

3. What approach or strategy would we use to calculate the density of the box below if we know that the box’s mass is 48 grams?
You would divide the mass by the volume to figure out its density
4. What can you infer from the liquids shown below?
Tube A is more denser than tube B
5. What is a valid conclusion for why ice and wood float in water?
Because its less denser than water

6. Your teacher gives you the following irregular shaped objects: marble, nail, small seashell, and a bolt. You are supposed to find the density of these four objects. Develop a plan and then explain how you are going to find the density of these irregularly shaped objects.
You would divide each of their mass by their volume, but to find their volume you would have to get a liter of water and fill it knowing what its volume. Then you would drop the item in it and then you measure how much the volume increased, you subtract and then you will find out its volume, for each.

Wednesday, April 17, 2013

Metals, Non-metals, and Metalloids

1. These are the physical properties, what are their definitions, that are used to distinguish between metals, non-metals, and metalloids?
Malleability- Its ability to melt allows it to transform into any form of shapes.
Luster- How a mineral appears to reflect light, and how brilliant or dull the mineral is.
Brittleness- firm but easily broken
Conductivity- how much electricity/heat a material can conduct
2. How are the light gray boxes that are labeled “C” classified? Explain your answer.
non- metals, they aren't metals, but also don't fit in another category so they fall under the non-metal catgory

3. What is wrong with the table below?
 Non-metals Magnesium Calcium Gold
none of the listed "non-metals" are non-metals

4. Compare and contrast metals, metalloids, and non-metals
metals are malleable, ductile, and good conductors of heat.
Non- metals are brittle, insulators
Metalloids have properties of both.
5. Which physical properties are the most important to use when identifying elements? Defend your answer.
metals or not metals, because it will tell you if it's a solid or a liquid. If you were to need to use a liquid, you wouldn't know if gold was the right choice because they weren't categorized.

6. Suppose you were given a list of unknown elements. How could you prove that the elements were metals, non-metalloids, or metalloids?
I would search it up on a periodic table, because without it, I would have no knowledge of which is which.

Elements & Compounds

What is an element?
Elements are substances that cannot be broken down into anything simpler.

2 hydrogens
1 oxygen
when they come closely together, they become liquid
whenever they come really close together, they form a solid
Waters' formula simplified is H2O

How is the Periodic Table organized?
they're organized by their characteristics. Maybe by metals or by gases.

2. What is the name of the element that C stands for?
carbon

3. What is the atomic number for C?
6

4. Locate Hydrogen, atomic number 1, what is the atomic mass?
1.0079

5. Locate Oxygen, atomic number 8, what is the atomic mass?
15.9994

6. Locate Carbon, atomic number 6, what is the atomic mass?
12.0107

Thursday, April 4, 2013

Post #5 Dissecting Sheep Heart

aorta- The main artery of the body, supplying oxygenated blood to the circulatory system.

artery- Any of the muscular elastic tubes that form a branching system and that carry blood away from the heart to the cells, tissues, and organs of the body.

atrium-
the upper chamber of each half of the heart.

capillary- One of the minute blood vessels that connect arterioles and venules.

circulatory system- The system that moves blood throughout the body.

valve- A membranous structure in a hollow organ or passage, as in an artery or vein, that folds or closes to prevent the return flow of the body fluid passing through it

vein- Any of the tubular branching vessels that carry blood from the capillaries toward the heart.

ventricle- The two chambers of the heart that are involved in pumping blood.

apex- The narrowed or pointed end

erythrocyte(red blood cell)-  corpuscle; one of the formed elements in peripheral blood.

leukocyte(white blood cell)-  a colorless blood corpuscle capable of ameboid movement, whose chief function is to protect the body against microorganisms causing disease and which may be classified in two main groups: granular and non-granular.

plasma- The clear yellowish fluid portion of blood, lymph,or intramuscular fluid in which
 The clear, yellowish fluid portion of blood, lymph, or intramuscular fluid in which cells are suspended.

platelets-

pulmonary vein and artery-

septum-

vena cava-

Post #13 5th 6 Weeks Review

1.
• Statement #1: All organisms are made up of one or more cells.
• Pic: the fishes, koalas, and Earth have organisms that are completley made up of cells
• Statement #2: All the life functions of an organism occur within cells.
• Pic: all of the characteristics are within the cell, for each cell
• Statement #3: All cells come from preexisting cells. the baby tiger was a new organism made of cells that was formed by another organism (the mother) that is also made up of cells.
2. ecosphere, ecosystem, community, population, multi-celled organism, body system, organ, tissue, and cell

3. In BOTH animal & plant cells
Nucleus- command center/ boss
Golgi- pack up proteins that are ready to be sent out to your body
Lysosome- break down food, cell waste, and worn out cell parts
Cell Membrane- regulates the chemical balance of the cell
Mitochondria- break down food and release energy
Vacuole- storage organelles that hang on to water, waste products and food until they're needed
Smooth Endoplasmic Reticulum- used to create and store large molecules, like steroids, and to store charged particles called ions.
Rough Endoplasmic Reticulum- studded with smaller structures called ribosomes
Ribosomes- responsible for making proteins
Only in plant cells
Cell Wall- acts as an extra layer of protection
Chloroplasts- plasma that is like jelly that keeps everything in place.
4.

5. plant cells have chloroplasts and a cell wall unlike an animal cell.
6.   Nervous System- nucleus
Respiratory System-

Digestive System- lysosome
Excretory System- cell membrane
Circulatory System-
Skeletal System- cell wall
Muscular System-
Immune System-
Integumentary System-
Endocrine System-
Reproductive System-

Monday, April 1, 2013

Post #11 Systems of the Human Body Web Surfing Science

Part I: Interactive Body

1. The kneecap is embedded in your _patella___ muscle.
2. The __
Achilles tendon____ is the largest and strongest tendon in the body. 3. You can smell, because nerve impulses travel from your ____spinal cord_____ to your brain.
4. The ____biceps brachii_____ muscle is usually the first one people flex to show off their strength.

Part II: Body Systems
Body Systems:
Match the organ system with its function by placing the number of the system in the box next to the function.
1. Muscular
2. Nervous
3. Skeletal
4. Cardiovascular (circulatory)
5. Endocrine
6. Respiratory
7. Lymphatic (immune)
8. Integumentary
9. Digestive
10. Reproductive
11. Urinary
• __3_.  Provides support and protection. Produces red blood cells and stores minerals.
• __4_.  Delivers important substances and removes waste through out the entire body.
• ___.  Enables motion, digestion and function of the heart.
• __5_.  Secretes hormones important to metabolism, growth and overall homeostasis.
• __7_.  Provides protection from infections.
• __6_.  Supplies oxygen and removes carbon dioxide from the body.
• __9_.  Stores and digest food, eliminates waste and absorbs water.
• _10_.  Produces new living organisms.
• ____.  Eliminates waste, maintains blood homeostasis.
• ____.  Maintains homeostasis, reduces water loss, responds to stimuli.
• ____.  Controls all the systems and organs directly using signals.
Part III: Put it Together
Put it Together:
Choose each of the body parts and determine which body system systems the part belongs to.
Lungs ________respiratory system_________________
Muscles __________muscular system_______________
Nose _________________________
Nails _______integumentary system__________________
Stomach _________________________
Teeth _________________________
Heart _________________________
Immune cells _________________________
Skin _________________________
Bones _________________________
Brain _________________________
Endocrine glands _________________________ Kidneys _________________________
Ears _________________________
Eyes _________________________
Liver _________________________
Hair _________________________

Post #10 Body System

 Organ System Organs Functions Nervous System spinal cord, nerves, and brain brain controls your nerves Endocrine System glands and hormones regulates body by secreting hormones into the bloodstream; also controls growth, reproduction and metabolism. Digestive System stomach, mouth, esophagus, small and large intestines, and anus break food down into smaller pieces, or smaller blocks, so that by the time the food reaches the cells of your body, they are nothing more than tiny molecules. Circulatory System heart, the lungs, and the blood vessels they work together to form the circle part of the circulatory system. The pumping of the heart forces the blood on its journey. Respiratory System lungs, airways, diaphragm, windpipe, throat, mouth, and nasal passages the process of breathing in and out through this system. Skeletal System bones and jaws holds organs in place provides structural support, stores minerals, and generates new blood cells Muscular System three types of muscles: skeletal, smoooth and cardiac Each of these different tissues has the ability to contract, which then allows body movements and functions. Integumentary System skin, hair, nails, and sweat glands reacts to external environmental conditions and protects the body's deeper tissue Reproductive System females have a uterus and ovaries, while males have a penis and testicles male and female systems to produce offspring Immune System lymph nodes, tonsels, and spleen protects body by fighting sickness and disease, such caused by viruses and bacteria Excretory System kidney and bladder filters, collects, and removes, excess fluids and wastes, from the bloodstream

Post #9 Educreations Lessons

Circulatory System: