Test Results OBJECTIVE 1

An orange has a mass of 132 grams. A shopper found the mass to be 111 and 144 on different balances. An orange has a mass of 132 grams. A shopper found the mass to be 111 and 144 on different balances.

Not precise = measurements 111 and 144 are not close together Not precise = measurements 111 and 144 are not close together Not accurate = measurements are not on target(close to actual mass) Not accurate = measurements are not on target(close to actual mass)

A student needs to measure exactly 67 ml of an acid. Which piece of equipment is best? A student needs to measure exactly 67 ml of an acid. Which piece of equipment is best?

100 ml graduated Cylinder 100 ml graduated Cylinder

A student measured a bike that was 69 centimeters long. The student’s measurements were 69.5, 68.5, 68.9, A student measured a bike that was 69 centimeters long. The student’s measurements were 69.5, 68.5, 68.9, 69.2.

Precise = all measurements are close Precise = all measurements are close Accurate =measurements are on target (close to actual mass) Accurate =measurements are on target (close to actual mass)

The meter stick wasn’t calibrated right means what? The meter stick wasn’t calibrated right means what?

Means the manufacturer didn’t make it right……..(very unlikely source of error) Means the manufacturer didn’t make it right……..(very unlikely source of error)

When you don’t know what a chemical is….. When you don’t know what a chemical is…..

Ask your teacher

What could be dangerous about spilling a chemical on your hand? What could be dangerous about spilling a chemical on your hand?

Hand gets a chemical burn Hand gets a chemical burn

What type of circuit is Christmas tree lights? What type of circuit is Christmas tree lights?

Series Circuit (1 path …if one light bulb goes out…..no bulbs work) Series Circuit (1 path …if one light bulb goes out…..no bulbs work)

Which circuit does not allow electrons to flow? Which circuit does not allow electrons to flow? Open circuit Open circuit

If you ever catch on fire and run around the room…….. If you ever catch on fire and run around the room……..

You keep burning because of the oxygen in room fuels the fire. You keep burning because of the oxygen in room fuels the fire.

Before you start any investigation…….. Before you start any investigation……..

Before you start any investigation……..YOU OBSERVE….and then you THINK Before you start any investigation……..YOU OBSERVE….and then you THINK

The Independent variable is the one that _______________ and is located on the _____ axis? The Independent variable is the one that _______________ and is located on the _____ axis?

The Independent variable is the one that is on the__X_____________ axis and the dependent variable is located on the __Y___ axis? The Independent variable is the one that is on the__X_____________ axis and the dependent variable is located on the __Y___ axis?

Where is the Dependent variable and the Independent Variable? Where is the Dependent variable and the Independent Variable?

Independent = A Independent = A Dependent = B Dependent = B

Which has a shorter wavelength…gamma, ultraviolet, or radio…….the longest wavelength? Which has a shorter wavelength…gamma, ultraviolet, or radio…….the longest wavelength?

Which has a shortest wavelength…gamma, ultraviolet, or radio…….the longest wavelength? Which has a shortest wavelength…gamma, ultraviolet, or radio…….the longest wavelength? Gamma = shortest Gamma = shortest Radio = Longest Radio = Longest

Your water comes from a nearby lake. One day the news says that the lake has been contaminated with bacteria, you should…..? Your water comes from a nearby lake. One day the news says that the lake has been contaminated with bacteria, you should…..?

BOIL IT… (your neighbors down the street would be contaminated also) BOIL IT… (your neighbors down the street would be contaminated also)

You had one group of people doing jumping jacks and one group of people doing sit-ups. What did you forget? You had one group of people doing jumping jacks and one group of people doing sit-ups. What did you forget?

(CONTROL GROUP) (CONTROL GROUP)

You give 50 ml of water to one plant and more than 50 ml to the other. What is wrong? You give 50 ml of water to one plant and more than 50 ml to the other. What is wrong?

Didn’t keep water constant Didn’t keep water constant

What are qualitative and quantitative results? What are qualitative and quantitative results?

Qualitative = Quality Qualitative = Quality Quantitative = Numbers Quantitative = Numbers

What is the mean, median, and mode of What is the mean, median, and mode of (5, 3, 3, 4, 5 ) ? (5, 3, 3, 4, 5 ) ?

What is the mean, median, and mode of What is the mean, median, and mode of (5, 3, 3, 4, 5 ) ? (5, 3, 3, 4, 5 ) ? 3, 3, 4, 5, 5 3, 3, 4, 5, 5

What is the mean, median, and mode of What is the mean, median, and mode of (5, 3, 3, 4, 5 ) ? (5, 3, 3, 4, 5 ) ? 3, 3, 4, 5, 5 3, 3, 4, 5, 5 Mean = Average = ( ) = 20 20/5 = 4

What is the mean, median, and mode of What is the mean, median, and mode of (5, 3, 3, 4, 5 ) ? (5, 3, 3, 4, 5 ) ? 3, 3, 4, 5, 5 3, 3, 4, 5, 5 Mean = Average = ( ) = 20 20/5 = 4 Mode = Most often listed = (3 and 5)

What is the mean, median, and mode of What is the mean, median, and mode of (5, 3, 3, 4, 5 ) ? (5, 3, 3, 4, 5 ) ? 3, 3, 4, 5, 5 3, 3, 4, 5, 5 Mean = Average = ( ) = 20 20/5 = 4 Mode = Most often listed = (3 and 5) Median = Number in Middle = 4

32 m/s going North = 32 m/s going North =

32 m/s going North = VELOCITY 32 m/s going North = VELOCITY

55 ml is equal to what? 55 ml is equal to what?

1 ml = 1cm 3 (It’s on the formula sheet) 1 ml = 1cm 3 (It’s on the formula sheet)

55 ml is equal to what? 55 ml is equal to what? 1 ml = 1cm 3 (It’s on the formula sheet) 1 ml = 1cm 3 (It’s on the formula sheet) 55ml = 55ml =

55 ml is equal to what? 55 ml is equal to what? 1 ml = 1cm 3 (It’s on the formula sheet) 1 ml = 1cm 3 (It’s on the formula sheet) 55ml = 55 cm 3 55ml = 55 cm 3

Force, Power, and Current are measured by what? Force, Power, and Current are measured by what? Force = Newtons Power = watts Current = amps

Acceleration, Speed and Velocity have what units? Acceleration, Speed and Velocity have what units?

Acceleration = m/s 2 Acceleration = m/s 2 Speed = m/s Speed = m/s Velocity = m/s going North, S,E, or W Velocity = m/s going North, S,E, or W

Work, Resistance, and Voltage are measured in? Work, Resistance, and Voltage are measured in?

Work = Joules Work = Joules Resistance = Ohms Resistance = Ohms Voltage = Volts Voltage = Volts

An electric current is made when what flows An electric current is made when what flows

An electric current is made when what flows? An electric current is made when what flows? Electrons Electrons

How many meters are in 36.5 km? How many meters are in 36.5 km? 36.5 km * __________

How many meters are in 36.5 km? How many meters are in 36.5 km? 36.5 km * __________ = 1 km 1 km

How many meters are in 36.5 km? How many meters are in 36.5 km? 36.5 km * __1000 m__ = 1 km 1 km

How many meters are in 36.5 km? How many meters are in 36.5 km? 36.5 km * __1000 m__ = m 1 km 1 km

How many centimeters are in 5 meters. 5 m * ________

How many centimeters are in 5 meters. 5 m * ________ = 1 m 1 m

How many centimeters are in 5 meters. 5 m * __100 cm_ = 1 m 1 m

How many centimeters are in 5 meters. 5 m * __100 cm_ = m 1 m

What slows down the flow of electricity? What slows down the flow of electricity?

Resistance (Ohms) Resistance (Ohms)

A toy race track is analogous to A toy race track is analogous to

A toy race track is analogous to…..a MODEL. A toy race track is analogous to…..a MODEL.