S221 Sem 1 DBA Review

S221 District Benchmark Assessment Review

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grams (g)

kilograms (kg)

milligrams (mg)

​Sample Units

The amount of matter an object has.

​Definition

Mass

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liters (L)

milliliters (mL)

​Sample Units

The amount of space an object takes up.

​Definition

Volume

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meters (m)

centimeters (cm)

kilometers (km)

​Sample Units

The difference in position from one point to another.

​Definition

Length/Distance

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Multiple Choice

Which of the following is a volume?

• 25 meters

• 25 cL

• 25 grams

• 25 centigrams

Multiple Choice

What is the length of the blue marker?

• 10 cm

• 12 cL

• 12 cm

• 12 cg

Multiple Choice

What volume of water is present in the image?

• 34mL

• 34cm

• 38mL

• 38cL

Multiple Choice

25mL is a unit of _________?

• Mass

• Volume

• Length

• Density

Multiple Choice

2300 kg is a unit of _________?

• Mass

• Volume

• Length

• Density

Multiple Choice

1600 meters is a unit of _________?

• Mass

• Volume

• Length

• Density

Remember which axis is the x-axis and which is the y-axis.

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​Axis

Mass (kg)

Distance (m)

Velocity (m/s)

​Examples...

Remember each axis gets a label with the variable and the unit that the variable is measured in

​Axis Label

Label your axis!

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Multiple Choice

What is the variable on the y-axis?

• distance

• miles

• time

• hours

Multiple Choice

What is the unit on the y-axis?

• distance

• miles

• time

• hours

Fill in the Blanks

Two variables that are responding in opposite directions.

Ex. One goes up the other goes down.

​Inverse

Two variables that are responding in the same direction.

Ex. One goes down the other goes down.

Direct

Variable Relationship

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Multiple Choice

What type of relationship do speed and time have?

• direct

• inverse

Multiple Choice

What type of relationship do X and Y have?

• direct

• inverse

Multiple Choice

What type of relationship do A and B have?

• direct

• inverse

Multiple Choice

What type of relationship do X and Y have?

• direct

• inverse

Multiple Choice

What type of relationship do X and Y have?

• direct

• inverse

Multiple Choice

What type of relationship do these variables have?

• direct

• inverse

Speed Equation...

S=speed

d=distance

t=time

/= per or divide

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​CLS 2: Motion

Acceleration Equation...

Vi=initial speed

Vf=finale speed

t=time

/= per or divide

( )***Remember to subtract first

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​CLS 2: Motion

meters per second per second

(m/s/s) or (m/s²)

kilometers per year per hour

(km/yr/hr)

Acceleration

meters per sec (m/s)

miles per hour (mi/hr)

centimeters per year (cm/yr)

Speed

Motion units...

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Multiple Choice

200 kilometers per day is a measurement of...

• speed

• distance

• time

• acceleration

Multiple Choice

4.5 m/s² is a measurement of...

• speed

• distance

• time

• acceleration

Multiple Choice

130 days is a measurement of...

• speed

• distance

• time

• acceleration

Multiple Choice

A person travels 350 kilometers in 10 hours. What is their average speed?

• 350 km/hr

• 3.5 km/hr

• 3500 km

• 3500 hours

Multiple Choice

An insect is moving at a constant speed of 20 m/s. How much time passes for the insect to travel 200 meters

• 20 seconds

• 10 seconds

• 200 seconds

• 10 meters

Multiple Choice

How far does a bicycle travel if it moves for 6 seconds at 40 m/s?

• 240 meters

• 8 meters

• 0.15 meters

• 240 seconds

Multiple Choice

An object changes speed from 10 mph to 20 mph in 5 seconds. What is the acceleration of the object?

• 10 m/hr/s

• 5 m/hr/s

• 4 m/hr/s

• 2 m/hr/s

Multiple Choice

An object starts at 30 miles per hour and decelerates at 2 mi/hr/sec, how much time does it take to stop?

• 60 hours

• 15 hours

• 15 seconds

• 60 seconds

​The objects position does not change

​​No Motion

​The objects position changes at a constant rate away from the origin.

Forward Motion

The objects position changes at a constant rate toward the origin

​​Backwards Motion

​Replace this with your body text. Have a nice day. Happy teaching!

​​Acceleration

Multiple Choice

Which of the following descriptions would be true for this graph?

• the object is moving toward the origin

• the object is not moving

• the object is moving away from the origin

• the objects speed is changing

Multiple Choice

Which of the following descriptions would be true for this graph?

• the object is moving toward the origin

• the object is not moving

• the object is moving away from the origin

• the objects speed is changing

Multiple Choice

Which of the following descriptions would be true for this graph?

• the object is moving toward the origin

• the object is not moving

• the object is moving away from the origin

• the objects speed is changing

Multiple Choice

Which of the following descriptions would be true for this graph?

• the object is moving toward the origin

• the object is not moving

• the object is moving away from the origin

• the objects speed is changing

CLS 3: Forces and Newton's Laws

​Key Topics

Balanced vs Unbalanced forces

Newton's 1st law = intertia

Newton's 2nd Law is F=ma

Newton's 3rd Law of equal and opposite reactions

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​Newton's First Law

An object at rest will stay at rest and an object in motion will stay in motion until an UNBALANCED force acts upon it.

Interia: The tendency to resist change in motion.

Inertia is only manipulated by an objects mass.

Subject | Subject

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​Newton's Second Law

Force = mass x acceleration (F=ma)

If two objects with different masses are applied the same force, the lighter mass will accelerate faster.

If two objects with the same mass are accelerating at different rate, the force applied must be different.

Subject | Subject

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​Newton's Third Law

For every action there is an equal and opposite reaction.

If you apply a 10N force on an object, that object applies a 10N force back on you.

Subject | Subject

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Multiple Choice

You place your iPad on your desk. Which of the following is true?

• It will remain at rest until a balanced force acts on it.

• It will move until a balanced force acts on it.

• It will remain at rest until an unbalanced force acts on it.

• It will fall to the ground due to gravity.

Multiple Choice

The crash test dummy continuing to move forward during a collision is an example of which law?

• Newton's 1st Law

• Newton's 2nd Law

• Newton's 3rd Law

• Newton's 4th Law

Multiple Choice

A bowling ball and a ping pong ball are applied the same force of 50 N. Which object would accelerate faster?

• Bowling Ball

• Ping Pong Ball

Multiple Choice

According to Newton's 3rd law, if I push on the floor, the floor is pushing back on me.

• True

• False

Multiple Choice

Which of the following has the most intertia...

• feather

• football

• basketball

• bowling ball

CLS 4: Energy

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Energy of an objects position

PE = mgh

​Potential Energy

Energy of motion

KE = 1/2mv²

​Kinetic Energy

Two main types of Energy

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​Law of Conservation of Energy

Energy can not be created or destroyed only transferred from one form to another.

Example: Standing at the top of a cliff is potential, jumping off the cliff turned your PE into KE.

Subject | Subject

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​Work--Physics Definition

Work: The resulting energy of a force being applied over a distance.

Work = Force x distance or W=Fd

If the action requires no distance being covered, then there is no work being done.

Work is energy and thus has a unit of Joules (J)

Subject | Subject

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Multiple Choice

Energy can be created if you try your hardest.

• True

• False

Multiple Choice

Which position would have the highest PE?

• A

• B

• C

• D

Multiple Choice

Which position would have the highest KE?

• A

• B

• C

• D

Multiple Choice

The objects KE would be greater at position B then at position C.

• True

• False

Multiple Choice

Energy of ______ is known as Kinetic Energy.

• motion

• position

• conservation

• emotion