Hot cocoa Lab

BELIEVE IT OR NOT!

TODAY WE WILL BE DOING

HANDS-ON AND ANSWERING

QUESTIONS ABOUT THE
CHEMICAL REACTIONS

AROUND US. BY OBSERVING

THE MOTION OF HOT

CHOCOLATE.

Simple Machines

A simple machine is a mechanical device that changes the direction or magnitude of a force.

Six Simple Machines

• Lever

• Wheel and Axle

• Inclined Plane

• Wedge

• Screw

• Pulley

Lever

A lever is a straight or curved rigid bar that is free to turn about a fixed point.

Multiple Choice

Which of the following is NOT one of the things a machine can do?

• Changes the amount of force required.

• Changes the distance over which the force is exerted.

• Changes the direction of the force.

• Changes the amount of work done.

Multiple Choice

The fixed point around which a lever rotates is know as the

• wheel.

• fulcrum.

• input force.

• output force.

Multiple Choice

How can simple machines make work easier?

• by decreasing the force needed to complete the task

• by increasing the friction between the machine and the object

• by adding more work on the object than originally applied

• by removing the force of gravity on the object

Multiple Choice

Simple machines can make work easier by reducing the input force needed to move an object. However, there is a trade off for decreased input. What is the trade off?

• The distance the object is moved is increased.

• The distance the object is moved is decreased.

• The amount of work is increased.

• The amount of work is decreased.

Multiple Choice

work is

• energy from the sun

• a type of machine

• a force that moves an object

• a force that pulls you toward the earh

Multiple Choice

The Ability to do work

• Soil

• Math

• Matter

• Energy 

Multiple Choice

One form of energy changes to another

• Energy Transformation

• Energy Transfer

Multiple Choice

Which is the example of conversion of wind energy into electricity?

Multiple Choice

Energy harnessed from the sun ( radiant light and heat)

• Wind Energy 

• Hydropower

• Solar Energy 

• Nuclear Energy

Multiple Choice

Energy cannot be created or destroyed is based on what law?

• Law of Conservation of Mass

• Law of Conservation of Heat

• Law of Conservation of Energy

• Law of Conservation of Temperature

Multiple Choice

Which energy source is non-renewable?

• Solar Energy

• Geothermal Energy

• Fossil Fuels

• Biomass

Multiple Choice

Which type of energy is based on moving electrons?

• Kinetic Energy

• Potential Energy

• Chemical Energy

• Electrical Energy

Multiple Choice

Which energy source is non-renewable?

• Hydropower

• Wind Energy

• Biomass

• Coal

Multiple Choice

Which type of energy is based on the vibrations of electrically charged particles?

• Sound Energy

• Light Energy

• Mechanical Energy

• Kinetic Energy

Multiple Choice

Which process transfers heat when particles collide in a solid?

• Conduction

• Convection

• Radiation

SCIENCE LAB

Hot chocolate

Chocolate

moving or not?

TELEPATHY

PHASE

Predict what will happen.

Move with hot chocolate in hand

for across the kitchen.



Looking at the hot chocolate. What do you
think will happen?

Drag and Drop

I think that the hot cocoa will

Placeholder

when I carry it

Drag these tiles and drop them in the correct blank above

spill

splash

make gentle waves

lay perfectly still and not move

EYES-ON PHASE

Watch the hot cocoa what is going

on?.



You ill carry a cup of hot chocolate with your
elbow at a 90-degree angle without pilling it..

Video Response

Carry the hot cocoa across the kitchen with your elbow at a 90 degree angle and wrist straight.

Open Video Recorder

IT’S REAL

PHASE

Explain what you saw.

What happened with the cocoa, did your arm

stay at 90 degrees?

Did your arm wrist muscles have to work harder

than usual?

Did you splash, waves, etc?



What was the conclusion after some time?

Multiple Choice

Did your experiment follow your prediction

• Yes

• No

JUST THE FACT

PHASE

Explain why this happened



What do you think made the change?

Open Ended

Write what you think caused the hot cocoa to splash?

DID YOU GET IT?

Fist to five



Is there a chemical

reaction physical

reaction?



Part 2 explain why you

think?


DID YOU GET IT?

Fist to five

Our arm works like a simple machine . The pivot is at the

elbow and the forearm acts as the lever arm. The muscle of

the biceps provides the effort and bends the forearm

against the forearm's weight and any weight the hand might

hold.

WHAT YOU NEED

TO KNOW

This lab is a simple machine lab.
Find a simple machine that would
help with carrying hot chocolate

without spilling.

For today’s Champion

question

What energy source would
this experiment use to the

best?

REAL-WORLD
APPLICATION

Your scientific research is on real-

world application



How could you use this to explain what
machines need energy?



Holding a cup steady is like synchrophasing of
machines to run at a proper time without over
or under working.

WHAT YOU NEED

TO KNOW

This lab is a chemical reaction or

physical reaction?

Can you make a simple machine to

carry or lift 25 pounds?

 Solve my riddle?

 What is a source for simple

machines to be effective for
human success?

 What is used from last

semester discussing the
10% rule?

 We will discuss how it is

broken up into two
categories for human use?

 What am I?

Energy use, good job!!