Heat and Energy
What is thermal energy?
The total energy of the moving particles in a substance.
This state of matter has a definite shape and definite volume.
What is a solid?
What does Mr. Brekke teach?
What is...
Science and MMS
Matter cannot be created or destroyed. This idea is called the Law of ______.
What is Conservation of Matter?
What is the force that opposes motion to slow a moving object down?
What is friction?
A black shirt on a sunny day gets hot because it absorbs more ______.
What is energy (or light)?
A water molecule contains these two elements.
What are hydrogen and oxygen?
How does gravity affect an object as it falls?
Causes the object to accelerate (speed up) downwards.
What does Mr. Brekke coach?
What is...
Basketball
Soccer
A student wraps a cup in foam to keep hot chocolate warm longer.
What is the main purpose of the foam?
Bouncing of light (or another form of energy) off a smooth surface at the same angle it hits (like a mirror).
What is reflection?
If 50 g of matter goes into a chemical reaction, this amount should come out.
What is 50 g?
As wavelength decreases, energy does this.
What is increases?
What is Newton's 1st Law of Motion?
What is...
An object at rest stays at rest, an object at motion remains in motion, unless acted upon by an unbalanced force.
A pot of soup is heating on the stove. The soup near the bottom warms and rises, while cooler soup sinks.
What type of thermal energy transfer is happening in the soup?
What is convection?
A mirror reflects most light while black paper absorbs most light. Which would get hotter in sunlight?
What is black paper?
Explain the difference between an atom and a molecule.
An atom is the smallest unit of matter, made of a single particle of an element.
A molecule is two or more atoms chemically bonded together.
Why would a ball fall differently on the Moon than on Earth?
The Moon has weaker gravity, so the ball accelerates more slowly.
What are the names of Mr. Brekke's dogs?
Need 2 names.
What is...
Stevie and Moose