9th Grade Science EOC Review

Structure of Matter

100

A sulfur atom has this many protons

What is 16?

200

Explain how to find the number of neutrons in an atom

What is "subtract the atomic number from the atomic mass"?

300

The smaller part of a solution is known as the ______

What is the solute?

400

Give the name and formula of the compound made by combining magnesium and fluoride ions.

What is MgF₂ and magnesium fluoride?

500

List the coefficients needed to balance the following equation:

N₂ + H₂ -> NH₃

What are 1, 3, 2?

Energy, Forces, and Motion

100

These are the 2 factors that affect potential energy

What are mass and height?

200

This is the process by which heat is carried to the Earth from the Sun, using electromagnetic waves.

What is radiation?

300

This is the tendency of an object to resist a change in motion (Newton's First Law is also called the law of this)

What is inertia?

400

This is a measure of the average kinetic energy of the particles in a substance.

What is temperature?

500

This is the term used to describe the maximum speed that a falling object reaches, when the forces gravity and air resistance are equal.

What is terminal velocity?

Electricity and Magnetism

100

This type of circuit has only one path for electricity to flow.

What is a series circuit?

200

As the distance between two objects increases (they get farther apart), what happens to the force of gravity between them?

What is decreases?

300

Electricity is an example of ________ energy (potential or kinetic)

What is kinetic?

400

Ohm's Law states that when voltage increases, this happens to the current

What is increases?

500

List the materials needed to build a simple electromagnet

What are wire, battery, and iron core?

Waves

100

This is the term used to describe the distance between adjacent crests or troughs.

What is wavelength?

200

This is what frequency does as wavelength increases.

What is decreases?

300

This is the color of visible light with the shortest wavelength and the most energy

What is violet?

400

This is the electromagnetic wave with the longest wavelength and lowest energy

What are radio waves?

500

This is the type of lens that causes light to converge to a focal point

What are convex lenses?

Miscellaneous

100

A student is studying a material which they find to be sour and turns litmus paper red. What is most likely the pH of this unknown substance?

What is 0-7?

200

This is the measurement of how effective a simple machine is.

What is mechanical advantage?

300

Give the name and formula of the compound formed by combining one nitrogen atom and 2 oxygen atoms

What is NO₂ and nitrogen dioxide?

400

These are the three ways to increase the strength of an electromagnet

What are:

1) Increase the number of coils

2) Increase the size of the iron core

3) Increase the current through the wire

500

Draw a model of a parallel circuit with 1 battery and 3 light bulbs.

Answers vary.