Hefner Science Review

What is the purpose of coolant?

• Helps driver turn wheels of car
• Helps brakes
• Helps prevent overheating and freezing
• Provides energy for car

Which of the following is true about swim bladders that fish have?

• They contain oxygen
• Fish normally have one swim bladder
• Enables a fish to mantain its depth without sinking
• Functions as a ballast tank

What does laminar flow mean?

• Resistance to flow

• Water flows in straight lines around object

• Water is choppy around an object

• The amount of matter in an object

What were some of the most deadly engineering disasters?

• SS Sultana Steamboat Explosion
• Hyatt Regency Walkway Collapse
• Canadian Trade Center Collapse
• Titanic

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What is the SI unit for volume?

• litres
• meters squared
• centimeters squared
• grams

What is an example of dynamic load?

• People on an elevator

• Food on a table

• Dogs on a stage

• Raining on a bridge

What is the purpose of a wedge as a simple machine?

• Used to hold two things together
• Used to lift heavy objects
• To eat (ex. a wedge of cheese)
• Used to raise water buckets from wells

What are examples of wheel and axles?

• Door knob
• Ferris Wheel
• Waterbottles
• Bike chains

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What is work in physics?

• Your job
• Putting energy into an object
• Removing pressure from an object
• Keeping the structure of a object

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Which of the following about particles is true?

• All particles are in constant motion

• There is around ten billion quadrillion vigintillion particles in the universe

• Temperature affects the speed at which particles move

• There is lots of space between particles in a solid

Tags

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