Physical Science Study Sheet

Unit 6

Name:___________________________________________                                                              Date:_________

1.       The glass walls of a thermos bottle are covered with a shiny metallic coating. What type of transfer of thermal energy does the coating reduce?

a.       Radiation            b. Conduction                   c. Convection                    d. Induction

2.       Albert stirs a mug of hot chocolate with a metal spoon. What type of transfer is responsible for the spoon getting hot?

a.       Conduction        b. Convection                    c. Thermoelectric            d. Radiation

3.       Energy from the sun reaches earth mainly by the process of

a.       Conduction        b. Convection                    c. Reflection                      d. Radiation

4.       What is one difference between conduction and convection? _________________________________________ ___________________________________________________________________________________________

5.       Heat ALWAYS travels from ___________________ to _________________.

6.       Heat is also known as __________________ energy.

7.       Can heat travel from a snowflake to your tongue? ______________

8.       Can heat travel from your hand to an ice-cube? __________________

9.       What is an example of a time when heat goes from a hot object to a less hot object? ______________________ ___________________________________________________________________________________________

10.   The transfer of heat by the movement of air currents in Earth’s atmosphere is an example of:

a.       Conduction                        b. Convection                    c. Radiation                        d. Fusion

11.   The faster the particles of an object are moving, the _________________ the temperature of the object.

12.   The temperature of an object increases/decreases when its particles slow down.

13.   If two objects come in contact with each other and one is warmer than the other, what happens?

a.       Both objects get colder

b.      Both objects get warmer

c.       Energy is transferred from the colder object to the warmer object

d.      Energy is transferred from the warmer object to the colder object

14.   If two objects have the same temperature but the larger one has more moving particles than the smaller one, what do we know about the thermal energy of the two objects?

a.       The larger object has more thermal energy                         c. They have the same thermal energy

b.      The smaller object has more thermal energy                     d. None of the above

Physical Science Makeup Work

Anything with a Chapter and Section will come out of the Red Text.
Worksheets are in this BLOG with the name Physical Science and the name of the assignment.


Energy Transformation 2/28: List 5 household items and how energy is transferred.  (Refer to Energy Transformation Worksheet)

Any Quizzes need to be made up in class.

-Mr. Slavich

Physical Science Energy Transformation Worksheet

Name:__________________                          Date:_________________

Energy Transformation Worksheet

Identify the different types of energy transformation in each of the scenarios

1. Wind blowing a windmill.

2. A Flashlight being turned on.

3. A microwave being used

4. A lit firecracker

5. A bicycle being ridden

6. A battery by itself

Give an example where the following energy changes would take place:

7. Electrical to Thermal-
8. Chemical to Thermal-
9. Electrical to Mechanical-
10. Electromagnetic to Thermal-

Physical Science Bounce Lab

Pre-lab questions                          Name ______________________

Question to be investigated – How high does a ball bounce?

When a ball is dropped from a higher location, do you think the ball will bounce higher or lower?   ___________________   What have you seen or experienced that makes you think that? ________________________________________________________________________________________________________________________________

In this experiment a tennis ball will be dropped from different heights and you will record how high the ball bounces. 

The independent variable is what you, the experimenter, will vary in the different groups or trials.  What is the independent variable in this experiment? ____________________________________________

The dependent variable is what you will measure in the results.  It is called “dependent” because it will DEPEND on the independent variable of the experimental set-up. Of course, you expect it to vary based on your differences between groups.  What is the dependent variable in this experiment? _____________________________________

 

The hypothesis is your STATEMENT of what you predict will happen.  How do you think height will affect the bounce of the ball?   Write a statement of what is your predicted answer to the question __________________________________________________________________________________________________________________________Check your statement to see if it includes your independent and dependent variables.  Your independent variable is the height from which the ball was dropped.  Your dependent variable is the height of the bounce.

Lab instructions:

Hold a meter stick vertically, with the zero end on the ground.  Drop a tennis ball from the 50-centimenter, 75-centimeter, and 100-centimeter marks and record the heights that the ball bounces for each.  Repeat for accuracy. 

Data Chart

Height from which ball is dropped	Height that ball bounces Trial 1	Height that ball bounces Trial 2
50 centimeters
75 centimeters
100 centimeters

Post Lab Conclusions:

Which ball bounced the highest? _____________________

Which ball bounced the lowest? ______________________

What conclusion can you reach about how high a ball will bounce when dropped from different heights? ______________________________________________

________________________________________________________________

Which ball had the greatest energy? ____________________

Where did the ball’s energy come from? _____________

Physical Science Study Guide

Unit 6 Study Guide

Name:__________________________________

Begin with reviewing corrected quizzes.

1.       Stored energy which means it has the ability to do work.___________________

2.       Energy doing work. ___________________

3.       Is potential energy affected by position?  ________  If yes, how? ____________________

4.       A stretched out rubber band is ____________________.  A flying rubber band is _________________

5.       Energy associated with motion or position._________________ energy

6.       Total energy of particles in a substance or material. __________________ energy

7.       Energy associated with heat.___________________ energy

8.       How does temperature affect thermal energy? (increase or decrease)

9.       Potential energy stored in chemical bonds. _____________________ energy

10.   Moving electrical charges produce electricity. _______________ energy

11.   If you plug in something it uses __________________ energy.

12.   Energy that travels in waves ___________________ energy.

13.   Energy stored in the nucleus of an atom and is released in nuclear reaction. ________________ energy.

14.   A bicycle uses _______________ energy to work.

15.   Food contains this type of energy. ___________________ energy

16.   Batteries contain this type of energy. ________________ energy

17.   Light is an example of __________________ energy.

18.   The highest part of a roller coaster has the most _______________ energy.  The valley after the highest part of a roller coaster has the most ______________ energy.

19.   How does a battery operated flashlight transfer energy? (List steps)

__________________________________________________________________________

20.   How does a TV transfer energy? (List steps)

__________________________________________________________________________

21.   Transfer of thermal energy through direct contact. _____________________________

22.   Transfer of thermal energy by the movement of a liquid or gas. _________________________

23.   Transfer of thermal energy through electromagnetic waves. _________________________

24.   Be able to label the parts of a wave.

25.   The number of complete waves that passes a given point in a certain amount of time.

_____________________________

Physical Science Crossword Puzzle

7th Grade Unit 7 Study Guide

Unit 7 Study Guide Adaptations

Name:__________________________________

1.      ________ are traits that help an organism survive and reproduce

2.      Physical features of organisms that change to survive.

3.      Things organisms do to survive.

4.      Organisms are born with adaptations or do they get adaptations?

5.      How to adaptations come about?

6.      The study of where organisms live.

7.      The process by which individuals that are better adapted to their environment are more likely to survive and reproduce than others of the same species.

8.      Who came up with the concept of Natural Selection?

9.      What is it called when an ecosystem is created and begins to grow things?

10.  What is it called when an existing ecosystem goes through a severe change due to an outside force?

11.  Species that naturally evolved in an area.

12.  Species that is carried to a new location (voluntarily or not)

13.  Why might an organism be called invasive?

14.  What are the four things that an invasive species can do to have a negative effect on an ecosystem.

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15.  List 2 organisms that are invasive to Louisiana and what effect they have had on the environment.

16.  How have humans had a negative effect on the ecosystem?  List 5.

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17.  What happens to the number of predators of an organism when they are moved from their native environment? (More predators or Less)

18.  Why would a rabbit want to be white if it lives on a tundra?

19.  Why is it that an organism that can’t reproduce will not be able to aid in natural selection?

20.  Would animals that are able to blend in with their surroundings be more likely to aid in natural selection?

21.  Why do organisms adapt?