1. 1st 9 Weeks Science Benchmark Review

2. What should be done if a glass beaker falls to the floor?
Don’t touch it and tell the teacher

3. What is a safety tool that is used to protect your clothing?
Apron

4. What is a safety tool used to protect your hands?
Gloves

5. Susan wants to see how the length of a pencil will affect its mass
Susan wants to see how the length of a pencil will affect its mass. What 2 tools will she need?
Length = Ruler or Measuring Tape
Mass = Triple Beam Balance

6. What is the volume?
14 mL

7. Which of these has more mass? Colored Pencil or Bottle of Water

8. How many times should an experiment be performed to increase accuracy?
At least 3, the more trials you perform, the better results you will get.

9. Explain what “dissolve” means and give an example.
Dissolve means to mix evenly with a liquid
Example- Sugar dissolves in water

10. What would happen if I added 10mL of salt to 3 liters of water and stirred the solution?
The salt would dissolve, becoming evenly mixed in the water

11. What is the boiling point of pure water
What is the boiling point of pure water? What is the melting/ freezing point of pure water?
Boiling- 100
Melting/ Freezing- 0

12. A chocolate bar is placed in the sun. After a while it becomes a liquid. Why?
Heat is added to the chocolate bar causing it to melt.

13. Name an object that uses electrical energy but produces light energy
Possible answers: light bulb, TV, lamp, etc.

14. Sound it produced by…
VIBRATIONS

15. Give an example of mechanical energy.
A bicycle

16. Name an item that produces thermal energy.
Possible answers: Toaster, stove, hair dryer, etc.

17. Electrical circuits can produce what 3 types of energy?
Light, Heat, Sound

18. Draw a picture of a closed circuit that is producing light
Draw a picture of a closed circuit that is producing light. Include a switch

19. Why is this circuit not generating electromagnetic energy?
Because the switch is open

20. Sally has a broken circuit
Sally has a broken circuit. What could Sally use to complete her circuit?
Anything metal; nail, aluminum foil, paperclip, etc.