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5.2 DBA Review
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23. As the balloon rocket moves, is this an example of an equal force or unequal force?
Unequal
22. In order to make my balloon rocket go further what can I change to make that happen?
Increase the force (amount of air)
21. What 2 other items sink?
Answers will vary
20. What 2 other items float?
Answers will vary
19. Items that sink are ________________ dense than water.
MORE
18. Items that float are ________________ dense than water.
LESS
17. If I open both switches, how many of the fans should work?
none
16. If I close switch 2 and open switch 1, how many of the fans should work?
None
15. Currently, how many of the fans should work?
Only 1
14. If all the water evaporates, what will be the mass of the sand left behind?
73 grams
13. What physical properties stayed the same for the water and sand in this mixture? Did anything change? (mass, color, temp, state)
The sand and water kept all of their physical properties. The sand may be a little darker and look muddy rather than individual grains.
12. If the mass of the water was 100 grams and the mass of the sand was 73 grams. What is the mass of this mixture?
173 grams
11. Which state of matter has particles of the same size bouncing around freely in all directions?
Gas
10. If I had a metal spoon, a rock, a pencil and a computer. All these are examples of a _____________
Solids
9. When the phone turns on, what 2 other energy transformations occur?
Electrical to Light, Electrical to Sound, Electrical to Mechanical (vibration), Electrical to Thermal (heat)
9. What energy transformation is happening as the phone is being charged?
Electrical Energy to Chemical Energy
8. What should I do to only have the blue and red bulb light up. Feel free to cut or detach anything.
Cut the wire at "X" and close all switches
7. What switches should be closed to make all the bulbs light up?
A, B, and C
6. Which bulb will turn on if I close Switch C?
Blue
5. A non contact force that pulls objects down to Earth, and keeps our planets orbiting the Sun.
Gravity
4. Material that allows electric current or heat energy to flow through easily
Conductor
3. A property of an object that tells whether it is solid, liquid or gas.
Physical State
2. A combination of two or more substances where those substances keep their properties.
Mixture
1. A mixture with one substance spread out so evenly in another substance that you cannot tell the two substances apart.
Solution
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