Which type of wave requires a medium to travel through?

Which of these is a mechanical wave?

Elements are pure substances made of 1 kind of atom, found on the ___________________________ of elements.

___________ are substances made of MORE THAN 1 kind of atom, such as water or sand.

___________ are substances made of ONLY ONE KIND of atom.

Substances that come out of a chemical reaction (they are produced) are called ____________________.

Substances that go into a chemical reaction are called ____________________

In a chemical reaction (like the one shown above) atoms are never created or destroyed, just rearranged. Therefore, the mass of the reactants is _______________ to the mass of the products, and the number of atoms of each element is the same on the reactant and product sides.

In the chemical reaction above, if 40 grams of methane (CH₄) reacts with 30 grams of Oxygen gas (O₂) then what will be the total mass of the products?

Mixtures that are EVENLY MIXED are called ____________________

Mixtures that are NOT evenly mixed are called ____________________

What element does the C stand for, in CO2?

________________________ elements form molecules from two of the same KIND of atom.

Which of these is an element?

Solutions! The substance that gets dissolved is called a ______________

Solutions! The substance that does the dissolving is the ______.

How many atoms of Hydrogen are found in 2 H₂O?

Is the Cl in the above chemical formula a chlorine or carbon atom?

Is Na considered an element or mixture?

A _____ is a push or pull on an object.

Unbalanced forces DO or DO NOT cause a change in motion?

Balanced forces DO or DO NOT cause a change in motion?

When forces are balanced, the net force is ___________ Newtons.

Inertia definition: Tendency of an object to ___________ a change in motion

Highest energy electromagnetic wave?

Longest wavelength wave? __________________________

Highest frequency wave? __________________________

What happens to frequency as wavelength increases? ________________

____________________ space rocks that are burning up in Earth’s atmosphere

____________________ chunks of ice, gas, and dust in orbit around the sun

____________________ space rocks found in a “belt” between Jupiter and Mars

____________________ A type of galaxy that’s a pinwheel shape and has hot, bright, young stars

____________________ A type of galaxy that has an egg or oval, possibly a sphere shape with older, red stars

The Milky Way is this type of galaxy

A type of galaxy that has no regular or discernible shape

____________________ A large sphere of hydrogen and helium undergoing nuclear fusion and producing energy

Where is the sun located in the Milky Way galaxy?

What type of galaxy is the Milky Way?

What two factors are plotted on the HR diagram?

Stars on the upper left are ________ and ________

Stars on the upper right are ________ and ________

Stars on the lower left are ________ and ________

Stars on the lower right are ________ and dim

The sun is what kind of star? ________________________

What are main sequence stars, such as the sun, doing in their core?

The vessels in a plant that move water from root to leaf:

The phloem in a plant move:

When water molecules stick to each other:

When water molecules stick to other things:

When water travels UP something:

surface tension occurs because of:

capillary action occurs because of:

What is neutral on the pH scale?

Acids release which ion in water?

Bases release which ion in water?

Bases have a pH of:

Acids have a pH of:

These substances feel slippery, taste bitter, and are often in cleaning agents

These substances taste sour and have a pH of less than 7

A substance with a pH of 1 would be:

A substance with a pH of 14 would be:

The pH scale goes from

The total distance divided by the total time is:

A student who kicks down on the skateboard and watches it fly UP is showing:

A student not wanting to carry a heavy backpack is experiencing:

A student who leaves his dishes in his room and then is surprised when they are there a week later, is experiencing:

When you and a friend both move a table in the same direction, how do you get net force?

If you pull on your dog's leash, and he pulls in the opposite direction, how do you get net force?

For every force or action, there's an equal and opposite force or reaction

Force = mass x acceleration

Which of these is on the TOP of the force, mass, acceleration triangle?

Objects in motion, stay in motion and objects at rest, stay at rest, unless acted on by an unbalanced force

88 miles per hour is a speed, but 88 miles per hour WEST is :

speeding up, slowing down, or turning are all ways to:

Which type of galaxy?

Which type of galaxy?

Which type of galaxy?

Which type of galaxy is a "pinwheel" shape?

Describe this object's motion:

Describe this object's motion:

Describe this object's motion:

Describe this object's motion:

Which car is the fastest?

Which has the most potential energy?

Food, fuel, and batteries are:

The energy stored in a stretched rubber band is:

The energy of moving things, or motion:

Which one is wavelength?

Which one is amplitude?

Which one is a crest?

Which one is a trough?