8th grade final review

Which are the correct order to the steps of the scientific method?

• hypothesis, research, observation/question, question, experiment, analysis, conclusion

• conclusion, analysis, experiment, hypothesis, question, observation/question, research

• observation/question, research, hypothesis, experiment, analysis, conclusion

• question/question, observation, hypothesis, experiment, research, analysis, conclusion

Determine which is the dependent and which is the independent variable in the following question. Which car (based on weight) travels the farthest on a 1 foot ramp?

• Length of the ramp
• Color of the car
• Speed of the car
• Weight of the car

Determine which is the independent and which is the independent variable in the following question. Which car (based on weight) travels the farthest on a 1 foot ramp?

• height of the ramp

• Color of the car
• Speed of the car
• Weight of the car

List the steps in order for the Engineering Design Process.

• • Observation/Question

  • Problem

  • Designs

  • Build

  • Modifications

  • Retest

  • Test

  • Conclusion

• • Observation/Question

  • Problem

  • Designs

  • Build

  • Test

  • Modifications

  • Retest

  • Conclusion

How do we classify matter?

• By its taste and smell
• By its composition and properties
• By its color and shape
• By its location and size

What is a heterogeneous mixture?

• A combination of two or more substances that are not uniformly distributed or mixed together.
• A mixture of substances that are uniformly distributed
• A combination of two or more substances that are evenly mixed together
• A solution with only one type of substance

What is a homogeneous mixture?

• A mixture in which the composition varies throughout
• A mixture in which the components are not evenly distributed
• A mixture in which the composition is only uniform in certain areas
• A mixture in which the composition is uniform throughout

What is an element?

• A type of mathematical equation
• A substance that cannot be broken down into simpler substances by chemical means
• A type of musical note
• A type of weather phenomenon

What is a compound?

• A substance formed when two or more chemical elements are chemically bonded together
• A type of clothing material
• A type of plant
• A type of musical composition

Which is a homogeneous mixture?

• A solution of sand and water
• A mixture of salt and pepper
• A bowl of cereal with milk
• Chex Mix