1. Physical Science Exam Review Questions

2. When a plastic rod is rubbed with fur, the plastic rod becomes negatively charged. Which statement explains the charge transfer between the plastic rod and the fur?
Protons are transferred from the plastic rod to the fur.
Protons are transferred from the fur to the plastic rod.
Electrons are transferred from the plastic rod to the fur.
Electrons are transferred from the fur to the plastic rod.

3. How do electrically charged objects affect neutral objects when they come in contact?
Electrons move from negatively charged objects to neutral objects.
Electrons move from neutral objects to negatively charged objects.
Protons move from positively charged objects to neutral objects.
Protons move from neutral objects to positively charged objects.

4. A series circuit has a 6-V battery and 3 ohms of resistance
A series circuit has a 6-V battery and 3 ohms of resistance. How much current will flow through the circuit?
0.5 A
2 A
3 A
18 A

5. What voltage is required to run a 45-watt light bulb if the current is 0.5 ampere?
45 volts
90 volts
120 volts
225 volts

6. Which best describes a circuit in series?
Different parts are on separate branches.
Current values are different at various points in the circuit.
Electrons may take several paths.
Electrons have only one path at all times.

7. Which statement is true about parallel circuits?
They contain separate branches through which current can flow.
They are usually called open circuits.
They provide one path through which current can flow.
They cease to function when one part of the circuit is disconnected.

8. A _____________ is a kind of plastic that can be remelted and reused.
Thermoplastic
Thermos
Thermoset
Thermometer

9. Hydrocarbons with at least one triple bond are called __________.
Alkanes
Alkenes
Alkynes
Cycloalkanes

10. The processes involved in the rock cycle include all of the following EXCEPT ____.
Condensation
Erosion
Weathering
Compaction

11. Sedimentary rocks are ____.
formed from magma
a type of foliated igneous rock
formed because of changes in temperature and pressure, or the presence of hot watery fluids
formed when loose materials become pressed or cemented together

12. Eutrophication, a form of water pollution, is associated with:
heated water waste from power plants
over fertilization of water
water-borne bacteria
burning of fossil fuels

13. The environmental cost of hydroelectric power includes ________.
increased biodiversity
Desertification
disruption of valley and river ecosystems
water pollution

14. Which of the following is the most significant "greenhouse gas"?
carbon dioxide
CFCs
methane
water vapor

15. Which of the following organisms would be expected to have the highest concentration of mercury pollution in its tissues?
the secondary consumers, such as sardines and herring
primary producers such as aquatic plants, phytoplankton, and algae
primary consumers, such as zooplankton
the tertiary consumers, such as tuna and sharks

16. The ___________ is the reservoir that contains living things.
Atmosphere
Biosphere
Lithosphere
Hydrosphere

17. The phenomenon in which high levels of carbon dioxide cause global warming is known as:
the Gaia hypothesis
acid deposition
the greenhouse effect
global distillation

18. The main method of heat transfer that causes a pot of water to boil is:
Conduction
Convection
Radiation

19. This type of heat transfer can occur in a vacuum:
Conduction
Convection
Radiation

20. Which is the best example that something has kinetic energy?
a car parked on a steep hill
a tennis ball rolling across the court
a picture hanging on the wall
a piece of coal before it's burned