WHAT ARE WE GOING TO STUDY THE WEEK OF March 23 TO March 27, 2015
- I know conversion equivalents for U.S. standard units of measurement.
- I know conversion equivalents for metric units of measurement.
- I understand the relationship between measurement equivalents within a given measurement system.
- I know I multiply when converting larger units of measurement to smaller units of measurement.
- I know I divide when converting smaller units of measurement to larger units of measurement.
- I can decide which conversions to use in multi-step, real world problems.
- VOCABULARY TO KNOW:
- conversion/convert/equivalent/hour/length/Metric System (meter, centimeter, gram)/length/ration/ U.S. standard units (pounds, ounces, inches) weight
- I can locate informational text in print and digital formats.
- I know strategies to locate answers to questions.
- I know strategies to solve problems.
Science: Investigate static electricity. Determine the necessary components for completing an electric circuit. Investigate common materials to determine if they are insulators or conductors of electricity. Compare a bar magnet to an electromagnet.
Magnetism is an invisible force that attracts metals containing iron. A magnet is any device or material that creates this force. Materials containing iron, steel, nickel, and cobalt can all be magnetized.
The molecules in iron, nickel, and cobalt each behave like tiny magnets. They are called dipoles and each has a north and south pole. They are grouped together in small units called domains. All the dipoles in a domain point the same way but the many domains in a material point in different directions since they are attracted to the opposite poles of nearby domains. However when the material is placed into a magnetic field the domains all line up in the direction of the field and the material is now a magnet.
Magnets come in many shapes and sizes including bar magnets and horseshoe magnets.
Materials that can easily be turned into magnets are said to be ferromagnetic. They can be described as hard or soft. Soft ferromagnetic materials such as iron quickly lose their magnetic properties and are called temporary magnets. Hard ferromagnetic materials such as steel keep their magnetic properties much longer and are used to make permanent magnets
The region around a magnet in which objects are affected by its magnetic force is called a magnetic field. The strength and direction of the magnetic field is shown by lines called magnetic flux lines. The arrows on the lines show the direction of the force. The field is strongest at the North and South poles of the magnet where the lines are closest together.
When an electric current flows through a wire, it produces a magnetic field around it. This effect is called electromagnetism and it us used to create electromagnets. Electromagnets are created by placing a metal core (usually an iron alloy) inside a coil of wire conducting an electric current. The electricity in the coil creates a magnetic field. This magnetizes the core and both fields together make the electromagnet.
Electromagnets are handy because the strength can easily be increased by either increasing the amount of coils or increasing the strength of the current. In addition, the direction of the poles can be reversed by changing the direction of the current. Electromagnets can also be easily turned on or off by connecting or disconnecting the current.
Magnets are used in a variety of ways. Permanent magnets are used to make electric motors and generators. Electromagnets are used in many electric devices including computers, telephones, switches, bells and buzzers. They are also used in industry to easily lift and move materials containing steel and to make Maglev trains which use magnets to ‘hover’ above the tracks.
vocabulary to know: circuit/ conductivity/conductor/ core/ current/ electricity/electric force/ electromagnet/ energy/ field/ friction/ induced charge/ insulator/ magnetism/ nail/ negative charge/ pole/ positive charge/ power source/ repel/ static electricity
Social Studies: Describe the importance of key people, events, and developments between 1950 -1975. Explain the key events and people of the Civil Rights Movement including Brown V. Board of Education, Montgomery Bus Boycott, the March on Washington , Civil Rights Act, Voting Rights Act, and civil rights activities of Thurgood Marshall, Rosa Parks, and Martin Luther King, Jr.
March 25: Annette Laing WWII
April 20: GA Milestones Testing
April 27: Career Day
May 4: Sweetwater visit