Warm-Ups

Warm-Up 1/4/19

Write a description in your own words of velocity

Description of how fast an object is moving in a direction

Warm-Up 1/7/19

Write a description in your own words of acceleration

Changes in how fast you're moving and/or direction

Warm-Up 1/8/19

What is the equation for...

Speed=Distance/Time

Velocity=Displacement/Time

Accelleration=Change in Velocity/Time

Warm-Up 1/9/19

What can we say Acceleration, Velocity, and Speed all have in common with one another?

They all are different ways to measure motion

Warm-Up 1/14/19

Fill in 2 things you learned in your KWL chart

K

Speed measurement (MP/H)

Newton's laws

W

Does mass affect an object's motion?

Does volume affect it?

L

Speed=D/T

Speed doesn't include direction

Warm-Up 1/15/19

Define distance and displacement

Distance: The length of the path between two points

Displaceent: Direction and distance of a straight line from a start and end point

Warm-Up 1/24/19

What is acceleration? What is an example of acceleration?

Acceleration is how fast something changes in speed and/or direction an object is traveling

When something is speeding up or slowing down

Warm-Up 1/25/19

A car is traveling at 15 m/s. It starts to decelerate steadily. It comes to complete stop in 10 seconds. What is it's acceleration?

-15/10=-1.5m/s^2

Warm-Up 1/31/19

A child drops a ball from a window. The ball strikes the ground in 3 seconds. What was the velocity of the ball the instant before it hit the ground?

3*9.8=29.4m/s^2 down

Warm-Up 2/4/19

Please come up with a story that describes the motion in this graph

A biker sped up from 0m/s to 20m/s after 5 seconds meaning their acceleration was 4m/s^2. They maintain this speed for 5 seconds, then decelerate from 20m/s to 0m/s after 5 more seconds, making their acceleration was -4m/s^2.

Warm-Up 2/5/19

Draw a distance vs time graph that shows this situation:

A girl rides her bike at a speed of 3m/s for 9s, then stops to talk with a friend for 10s then accelerates towards the park to race her friend for 15s.

Warm-Up 2/8/19

What grade will you get on todays test?

I'll get at least a B.

Warm-Up 2/14/19

Name and briefly describe the 4 main types of friction.

Static Friction: A force that opposes an object that isnt moving

Fluid Friction: A force that opposes an object that is moving in water

Sliding Friction: A force that opposes an object that is sliding over another object

Rolling Friction: A force that opposes an object that is rolling over another object

Warm-Up 2/19/19

What is Newton's 1st Law

An object in motion stays in motion unless acted upon an equal and opposite force. An object in rest stays at rest unless acted upon a force.

Warm-Up 3/4/19

What is Newton's 3rd Law?

For every action is an equal and opposite reaction.

Warm-Up 3/7/19

What is momentum?

The buildup of kenetic energy.

It is also how hard something has to hit something to stop it.

p=mv (momentum=mass*velocity)

Warm-Up 3/11/19

What are the three main types of "Universal Forces"?

Gravity, nuclear, electromagnetic

Warm-Up 3/12/19

What is the difference between strong and weak nuclear forces

Weak nuclear forces are smaller and weaker than strong nuclear forces.

Warm-Up 4/1/19

What is Bernoulli's Principal? Example

As the speed of a fluid increases, the less pressure

Fertilizer Spray - the water passes by the fertilizer fast, pushing it up so it can mix

Warm-Up 4/2/19

What is Pascal's Principal

Pressure in a fluid is transmitted equally in infinate directions throughout the fluid.

Warm-Up 4/3/19

Why dies wood float but the same size block of granite sink?

Wood is not as dense as granite, making it sink.

Warm-Up 4/4/19

What is Archimedes Principle?

The weight of the fluid that is displaced by the object is equal to the bouyant force of that object.

Warm-Up 4/11/19

What conditions must exist for a force to do work?

Motion and in same direction you're going

Warm-Up 4/12/19

A car exerts 300J as it travels a distance of 30m. What is the Force the car had during this time?

300/30=10

Warm-Up 4/12/19

70W of power is used to move a mower 25m in 5s. What was the work done on the mower?

W=P*T ||| 70*5=350J

Warm-Up 4/18/19

What is the law of conservation of energy?

How does it apply to machines? What happens to the energy that is "lost" when using a machine?

Energy can NOT be created nor destroyed

Friction causes some energy to be lost (heat and sound)

Warm-Up 4/22/19

What is Heat?

Friction causes heat - how fast particles are moving - a form of energy

Warm-Up 4/24/19

What is the 2nd law of thermodynamics? What is an example of it?

Natural processes tend to increase the disorder/chaos of the universe.

Ex. Fire, any star

Warm-Up 4/24/19

What is an example of each of the 3 types of heat transfer?

Conduction: When hot coal touches a cool wood, the heat transfers to the wood, setting it on fire

Convection: When your house heats up on a hot day

Radiation: When the sun warms the Earth

Warm-Up 4/29/19

List all the things you "know" about light

No mass, straight line (unless reflected)

Light is made of photons

Light can heat objects with radiation

299,792,458m/s

Reflects off objects and can be absorbed by others

Heat and light are VERY similar

Warm-Up 4/30/19

What is color? Why do we see certain objects as on color of another?

Color is a wavelength of the visible spectrum

Objects are a color when every color is absorbed but one or more. For example, lemons are technically every color but yellow.

Warm-Up 5/1/19

What are the types of electromagnetic radiation in order from longest to shortest wavelength

Radio, microwaves, infrared, visible, ultraviolet, x-ray, gamma

Warm-Up 5/2/19

What are the different colors of light that make up white light?

Why do we use more than just visible light to view objects in the universe

Red, orange, yellow, green, blue, indigo violet

If we point a telescope at empty space we may not see anything, but if we use an x-ray telescope we may be able to see something. This is because x-rays travel faster than visible light. This is also true for gamma rays

Warm-Up 5/3/19

What is one example of how we use each type of electromagnetic radiation?

Radio waves: For transmitting wifi signals

Microwaves: To heat our food

Infrared: A remote communicating with a TV or other device

Visible Spectrum: To see

Ultraviolet: Taking images of far-away planets

X-Rays: For diagnosing medical problems such as a broken bone

Gamma rays: For treating cancer

Warm-Up 5/7/19

What is sound?

Sound is vibrations that travel through the air. When these vibrations hit an animals ear, you hear what we call sound.

Warm-Up 5/8/19

What are the two types of waves and how are they different from eachother

Transverse and longitudinal waves

Transverse waves move perpendicular to the wave. The vibration is in a 90 degree angle from the actual wave.

Longitudinal waves vibrate and move in the same direction

Warm-Up 5/13/19

What is electricity? Define it and/or list some things that you know are true about electricity?

Electricity is moving electrons from one thing to another. It is used to power electronics.

Warm-Up 5/14/19

What is one thing you learned in yesterday's notes about electricity?

What is one thing you still want to learn about electricity?

I learned what current actually is

idk i know a lot about this crap

Warm-Up 5/20/19

What is a magnet and how does it work

A magnet is an object with a magnetic force.

It works when all the magnetic domains are aligned in the same direction.

Warm-Up 5/21/19

Draw the magnetic domain in a strong magnet vs the domain is an object that is nonmagnetic

Left=Magnetic, Right=Non-Magnetic