Unit 2 Test Study Guide

Memorizing this study guide will NOT help much on the test. This study guide just tells you the type of things you need to study from your notes, class work, and each other to get ready for the test.

You know about the following:

1. The three principal phases or states of matter. You should be able to diagram the molecules of these three states of matter and discuss what you know about each state…...like does it have a definite shape or volume. You also should know that as we add heat energy to matter the molecules start to move faster (more kinetic energy) and as we take away heat energy the molecules start to move slower (less kinetic energy)

2. You need to know that matter can go through two types of change: physical and chemical. The difference between the two can best be determined by the evidence:

Evidence of physical change: The type of matter DOES NOT CHANGE but there might be Changes of state, change of shape, changes in density, volume, or mass(size), and sometimes changes in color.

Evidence of chemical change: The type of matter DOES CHANGE, there might be a formation of a gas, a precipitate, or a change in energy (endothermic-absorbs heat, feels cold exothermic-releases heat, feels hot)

3. How calculate density. Density = mass/volume Mass is always measured in grams. Volume can be measured either in mL or cubic centimeters.

4. How to calculate volume of a rectangle prism (box). This is length x width x height.

5. How to calculate the volume of an irregular shaped object like a wedding ring. a) put some water in a graduated cylinder and measure the volume b) add the object and see the new volume c) subtract the first volume from the new total volume.

6. How to find the dependent and independent variable in an experiment when the experiment is described to you in a paragraph and in a chart.

Unit 1 Study Guide 2008

For the District Unit 1 Test, you will be asked questions about the scientific method and measurement. Never fear, it is primarily stuff we have already gone over in class.

You need to know:

The three types of variables--Controlled, Independent and Dependent

How to read a thermometer (sometimes each line is two units)

How to read a graduated cylinder to find the volume of a liquid in milliliters (remember, you must measure from the bottom of the meniscus!)

How to read and interpret a graph, data chart, and data table

How to make predictions from a graph, data chart, and data table

The difference between inference and observation

The safety symbol for flammable materials and sharp objects

How to measure volume using the displacement method (ending volume – starting volume)

How to calculate the volume of a regular shaped object (length x width x height)

How to calculate density (mass ÷ volume)

The last 2 q’s are graphing questions. It is almost like I knew what was coming!! (Aren’t you glad, we practiced this with our Lab and P.O.D.!!) No wonder my students get the highest scores in the district. You must label a pie chart. You must properly format a line graph.

Remember: 1. DRY MIX 2. Scale 3. Plot Data

Open House Tonight!!

Welcome to 6th Grade Physical Science at Broadmoor Middle.
This class blog is used primarily to inform students about upcoming tests and post online study guides. The study guides generally have links embedded into them to give further information. My contact information is always on the board, on this site, and available from the school. Thanks for coming!

Unit 7 Exam Study Guide!!!

1. Remember average speed? You should. Avg. Speed = Distance (m) / Time (sec)

2. Friction is the force that opposes motion and transforms work into heat. Friction can be decreased by adding things like oil or water onto two surfaces that are rubbing together. Friction can be increased by adding things like sand or grit between two surfaces.

3. Know the three classes of levers:

1st Class— Fulcrum in the middle

2nd Class—Load is in the middle

3rd Class— Effort is in the middle

4. Work happens when an object is moved a distance by a force. If two forces are going the same direction they add together. If they are going opposite directions they will subtract from each other.

5. Machines make work easier.

6. Efficiency compares the output of a machine to the input: Efficiency = output work / input work x 100%

7. Power = work (j) / time (s)

8. Inclined planes (ramps) that are longer have more Mechanical Advantage.

9. You might also want to review the concepts of kinetic and potential energy and the law of conservation of energy from Unit 5.

Video Clips on Simple Machines

More Help For Unit 4 Test....

You need to be certain that you can interpret graphs that show the motion of an object.

There are 2 kinds of graphs on the test:

Speed Graphs: This is where DISTANCE is plotted against TIME

Acceleration Graphs: This is where SPEED is plotted against TIME

For some help remembering....click here. (You need to have PowerPoint to view this file)

Unit 4 Test Study Guide

You should know the following:
1. Speed = Distance ÷ Time and when we graph speed, distance is on the Y axis and time is on the X axis
Constant speed on a graph is a straight line.

2. Acceleration = Speed ÷ Time Constant acceleration is a straight line on a speed vs. time graph

3. Friction is when two surfaces rub against each other. Friction causes things to slow down. Friction is very important for brakes to work

4. Forces are pushes or pulls. They can add together (if they're going the same direction) or subtract from each other (if they are acting in opposite directions)

5. When there is no air resistance objects fall at the same speed and will hit the ground at the same time.

6. More mass, more inertia. Inertia is the tendency of an object to remain in motion or stay at rest.

7. What factors (kinds) of things affect the rate of an object accelerating:
mass: more mass = less acceleration less mass = more easily accelerated
force: more force = faster acceleration less force = slower acceleration

8. In order to test something you would:
A. Make a hypothesis: “IF I do _______________ , THEN I think _______________ will happen.”

B. Test the hypothesis: “I will change ____________ and record what happens. I will repeat it several times.

C. Analyze the data: “I wrote down my observations in this chart and then made a graph.”

D. Make conclusions based on facts: “When I did _______ the measurement changed to ________, this proves my hypothesis as correct.”