Jeopardy Scientific Inquiry Energy Motion Force Electricity Q $100 Final Jeopardy

$100 Question from Scientific Inquiry Make one observation and one inference about the image below.

$100 Answer from Scientific Inquiry Observation: Uses five senses (what you see, hear, smell, feel, taste) Inference: Based on observations and prior knowledge

$200 Question from Scientific Inquiry How many significant figures are in the following numbers? 0.001090 2,040

$200 Answer from Scientific Inquiry 0.001090 = 4 sig figs 2,040 = 3 sig figs

$300 Question from Scientific Inquiry Rewrite the following number in scientific notation: 0.000043

$300 Answer from Scientific Inquiry 0.000043 4.3 x 10-5

$400 Question from Scientific Inquiry How is a scientific law different from a scientific theory? How are they the same?

$400 Answer from Scientific Inquiry Law: short, describes, tells what will occur under specific conditions Theory: long, explains, tells how/why things work Both: supported by data and repeated experimentation, can be used to make predictions, can be changed/modified with new discoveries

$500 Question from Scientific Inquiry Convert 254 mL to decaliters.

$500 Answer from Scientific Inquiry 254 mL 1 L 1daL = 0.0254 daL 1 1, 000 mL 10 L

How can you tell if an object is moving? $100 Question from Motion How can you tell if an object is moving?

$100 Answer from Motion Look for a change in position when comparing the object to a reference point.

What is the difference between distance and displacement? $200 Question from Motion What is the difference between distance and displacement?

Distance measures the total length traveled $200 Answer from Motion Distance measures the total length traveled Displacement measures the total change in position

What is the difference between speed and velocity? $300 Question from Motion What is the difference between speed and velocity?

Speed: rate at which an object moves; how fast it goes; s = d/t $300 Answer from Motion Speed: rate at which an object moves; how fast it goes; s = d/t Ex: 30 m/s Velocity: speed and direction of an object Ex: 30 m/s east towards bridge

$400 Question from Motion A cyclist turns a corner maintaining a constant speed. Is she accelerating? Why or why not?

$400 Answer from Motion Yes, she is accelerating because she is changing direction. Acceleration is defined as a change in velocity. Since velocity includes both speed and direction, speeds up, slowing down, or changing direction is acceleration.

Explain how orbital motion works. $500 Question from Motion Explain how orbital motion works.

$500 Answer from Motion Orbital motion is a form of projectile motion. The space shuttle’s path curves around Earth due to a combination or two motions happening simultaneously: Horizontal motion due to the force of the shuttle’s engines launching it forward and vertical motion due to the pull of gravity.

What is the strongest type of friction? When does it occur? $100 Question from Force What is the strongest type of friction? When does it occur?

$100 Answer from Force Static friction is the strongest, and it occurs between two surfaces at rest.

$200 Question from Force Identify the net force and resulting motion of an object experiencing balanced forces.

There would be no change in the motion $200 Answer from Force Net force is 0 Newtons There would be no change in the motion

$300 Question from Force When you sat your pencil on your desk, the desk applies a reaction force that is equal in strength and opposite in direction. This is an example of Newton’s ________ law of motion.

Newton’s Third Law of Motion $300 Answer from Force Newton’s Third Law of Motion

What is Newton’s Second Law of Motion? $400 Question from Force What is Newton’s Second Law of Motion?

$400 Answer from Force The unbalanced force required to move an object is equivalent to the objects mass times its acceleration. F=ma

Gravitational force depends on what two factors? $500 Question from Force Gravitational force depends on what two factors?

Increase in mass = increase in gravity $500 Answer from Force Mass and distance: Increase in mass = increase in gravity Increase in distance = decrease in gravity

List the six simple machines $100 Question from Energy List the six simple machines

Inclined plane Wedge Screw Lever Pulley Wheel and axel $100 Answer from Energy Inclined plane Wedge Screw Lever Pulley Wheel and axel

Gravitational Potential energy depends on… $200 Question from Energy Gravitational Potential energy depends on…

Mass, height, and the acceleration due to gravity $200 Answer from Energy Mass, height, and the acceleration due to gravity PE = mgh

What is the law of conservation of energy in its simplest terms? $300 Question from Energy What is the law of conservation of energy in its simplest terms?

Energy cannot be created or destroyed. $300 Answer from Energy Energy cannot be created or destroyed.

$400 Question from Energy After a man applies a 180 Newton force to a steel beam, it does not move. How much work was done?

None. If the object does not move due to the force, no work was done. $400 Answer from Energy None. If the object does not move due to the force, no work was done. W=Fd W = 180N x 0m W = 0 Joules

$500 Question from Energy When would the arrow in the image below have the greatest amount of potential and kinetic energy?

Greatest PE= when bow is drawn fully back $500 Answer from Energy Greatest PE= when bow is drawn fully back Greatest KE=right when bow is relaesed

$100 Question from Electricity Every charged object creates/emits a(n)…

$100 Answer from Electricity Electric field

$200 Question from Electricity What two factors affect electric force?

$200 Answer from Electricity Amount of charge and distance: Greater charge = stronger force Greater distance = weaker force

$300 Question from Electricity Describe what charge pairs create attractive and repulsive forces.

$300 Answer from Electricity Like charges repel and opposite charges attract. If an object is (+) charged it has more protons than electrons and will be attracted to an object that is (-) charged, or has more electrons than protons.

$400 Question from Electricity Describe the difference between a series and parallel circuit.

$400 Answer from Electricity Series: one possible path for current Parallel: multiple possible paths for current.

$500 Question from Electricity What is the relationship between voltage, current, and resistance?

$500 Answer from Electricity Ohm’s Law: V=IR Increase in voltage = increase in current Increase in resistance= decrease in current

Final Jeopardy Patrick wants to see which brand of mounthwash will kill the most oral bacteria. Identify the appropriate variable for this investigation: Independent variable Dependant variable Controlled variables Control group

Final Jeopardy Answer Independent variable- brand of mouthwash Dependant variable- amount of bacteria killed/grown Controlled variables- same mouth, same time of day, same exposure to elements, same growing conditions, same amount of mouthwash Control group- no mouthwash added