Super Science Fair Projects

offers a step-by-step guide to science fair projects for students – middle through high school. Over 500 science projects, science experiments and science fair project ideas. Parents and Teacher’s Guide and Resources.

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Grade 9 Science Experiment 5 – Fun Balance Tricks using the Physics of Balance

Purpose:

The purpose of this science fair project is to demonstrate the physics of balance through different amazing balance situations. The balance effects of everyday objects is explored. An object will balance when its center of gravity is over the point of support. The center of gravity is the location where all of the object’s mass, on the average, resides. The larger the base, the more stable the object will be.

Hypothesis:

Regular household items such as forks, jars, and pencils can be balanced on each other as long as the center of gravity is correctly located.

Variables:

1. The weight and shape of objects.
2. Location of the center of gravity.

Materials Needed:

Meter stick
Knife
Modeling clay
Pencils
Dinner forks
String
Coin
Soda Bottle (2 Liter with cap)
Glass jar with lid

Grade 9 Science Experiment 4 – How does Friction Affect the Motion of Objects?

Purpose:

The purpose of this science fair project is to explore the physics of friction. Friction is the force between two surfaces when they are rubbed together. The science fair project will demonstrate the effects of friction in many instances including smooth and rough surfaces.

Following are properties of Friction:

Two smooth surfaces rubbed together causes little friction.
Two rough surfaces rubbed together causes great friction.
Less friction occurs when a liquid is between the two surfaces.
More friction occurs when two surfaces are forced against each other.

A common example of the effects of friction deal with the icy, snowy roads in the winter. Icy, snowy roads can be very slippery because the liquid water doesn’t cause much friction with a car tire. Therefore, sand and salt are sprinkled on the roads. The sand is a rougher substances that will cause more friction with car tires thus helping cars to avoid sliding off the road.

Hypothesis:

Rubbing smooth surfaces together will yield less friction than rubbing rough surfaces together.

Variables:

1. Rough surface
2. Smooth surface
3. Oiled surface

Materials Needed:

Two bricks
Wooden board (2ft by 1ft or a size of your choosing)
Roller skates
Rubber bands
Oil
Glass panes
Sandpaper
Pencil
Paper

Grade 9 Science Experiment 3 – How to Create your own Elevator using Physics

Purpose:

The purpose of this science fair project is to demonstrate how physics can be used to change the direction of forces. Elevators can utilize the force of gravity by lowering you closer to the center of the Earth. However, elevators can also directly oppose gravity by raising an elevator car. In this science fair project you will create an elevator using the principles of Physics regarding a pulley and weight system. Weights should maintain a constant tension in the line.

Hypothesis:

An elevator can be constructed using a pulley and weight system. The difference between the weight of the elevator car and the counterweight affects the speed and safety of the elevator.

Variables:

1. Weight of the counterweight piece of clay
2. Length of string
3. Placement of coffee cans

Materials Needed:

Two metal coffee cans
Nails
Hammer
Small cardboard box that represents an elevator car
String
Tape
Modeling clay to be used as a counterweight to the elevator car. Therefore, the piece of modeling clay should be similar weight to the elevator car.
Rubber band
Wooden board that is 2ft by 1ft (You can modify the size of the wooden board.)
Paper
Pencil

Grade 9 Science Experiment 2 – Pendulums and Springs – How does a pendulum clock keep time?

Purpose:

The purpose of this science fair project is to demonstrate the physics of pendulums and strings. Grandfather clocks use a pendulum to keep time. A pendulum consists of an item that hangs from a fixed point with a weight at the bottom of it called a “bob”. This hanging item and its bob are free to swing in a downward motion by the force of gravity followed by an outward and upward motion. The direction the pendulum and bob travels is due to its inertia when it is pulled back and released.

Inertia refers to the principle that when a body is in motion it stays in motion and when a body is at rest it stays at rest unless it is acted upon by an outside force. In this science fair project, the outside force occurs when you pull back and release the pendulum from varying heights and starting positions.

Hypothesis:

height at which you pull back and release a pendulum affects the amplitude and speed of the pendulum. The length of the pendulum and weight of the bob will affect the speed of the pendulum.

Variables:

1. Height at which you release the pendulum
2. Length of the pendulum
3. Weight of the bob on the pendulum
4. Amplitude of the pendulum swing

Materials Needed:

Tongue depressor
Tape
String
Paper Clip
Washers
Scissors
Pencil
Paper
Ruler
Edge of a desk or flat surface

Grade 9 Science Experiment 1 – Projectile Motion – Does a marble projectile fall straight down?

Purpose:

The purpose of this science fair project is to demonstrate Galileo’s theory that horizontal and vertical motions are independent. Galileo’s theory says that if you project a ball horizontally and drop another ball from the same height, both balls will strike the ground at the same time. The force of gravity pulls the ball towards the center of the earth. This pull causes the ball to travel in a curved path because it moves horizontally as it falls to the ground.

In this science fair project you will create an incline launching pad. A marble will be rolled down this launching pad and will be projected horizontally. Physics plays a role as you observe the effects of the pull of gravity and horizontal displacement.

Hypothesis:

Horizontal and vertical motion of an object are independent.

Variables:

1. Height of the ruler launch pad
2. Weight and size of the marbles

Materials Needed:

Wooden Ruler with grooves
Marbles of varying weights and sizes
Nails
A Brick
12 inch x 6 inch Wooden board
Plumb line with a plumb bob
Graph Paper
Pencil

Grade 9 Physics

Physics 1 – Projectile Motion – Does A Marble Projectile Fall Straight Down? The purpose of this science fair project is to demonstrate Galileo’s theory that horizontal and vertical motions are independent. Galileo’s theory says that if you project a ball horizontally and drop another ball from the same height, both balls will strike the ground at the same time. The force of gravity pulls the ball towards the center of the earth. This pull causes the ball to travel in a curved path because it moves horizontally as it falls to the ground.

Physics 2 – Pendulums and Springs – How Does A Pendulum Clock Keep Time? The purpose of this science fair project is to demonstrate the physics of pendulums and strings. Grandfather clocks use a pendulum to keep time. A pendulum consists of an item that hangs from a fixed point with a weight at the bottom of it called a “bob”. This hanging item and its bob are free to swing in a downward motion by the force of gravity followed by an outward and upward motion. The direction the pendulum and bob travels is due to its inertia when it is pulled back and released.

Physics 3 – How To Create Your Own Elevator Using Physics The purpose of this science fair project is to demonstrate how physics can be used to change the direction of forces. Elevators can utilize the force of gravity by lowering you closer to the center of the Earth. However, elevators can also directly oppose gravity by raising an elevator car. In this science fair project you will create an elevator using the principles of Physics regarding a pulley and weight system. Weights should maintain a constant tension in the line.

Physics 4 – How Does Friction Affect The Motion Of Objects? The purpose of this science fair project is to explore the physics of friction. Friction is the force between two surfaces when they are rubbed together. The science fair project will demonstrate the effects of friction in many instances including smooth and rough surfaces.

Physics 5 – Fun Balance Tricks Using The Physics Of Balance The purpose of this science fair project is to demonstrate the physics of balance through different amazing balance situations. The balance effects of everyday objects is explored. An object will balance when its center of gravity is over the point of support. The center of gravity is the location where all of the object’s mass, on the average, resides. The larger the base, the more stable the object will be.

Grade 9 Science Experiment 20 – How to Create a Solar Eclipse

Purpose:

The purpose of this science fair project is to explain and demonstrate the phenomena of a solar eclipse. A solar eclipse occurs when the Moon passes between Earth and the Sun. This movement covers the Earth’s view of the Sun either partially or completely. A solar eclipse is a very rare event and can be seen from specific locations on earth. Solar eclipses occur during the New Moon phase. The New Moon phase is when the Sun and Moon are in conjunction.

In this science fair project you will construct a model that demonstrates how an eclipse appears. Additional exploration will include investigating sun spots and observing changes of the position of the earth with respect to the sun.

Hypothesis:

A solar eclipse can be created by understanding the movements the sun and moon make with respect to the earth.

Variables:

Position of the sun (ceiling bulb)
Position of the moon

Materials Needed:

Opal electric bulb
Blackened cardboard (2 pieces that have dimensions of 12in by 9in)
Wood piece to be used as a base (It can range in size, but dimensions of 12in by 36in works well.)
Three wood pieces which will be used as supports for other components of the apparatus. The wood pieces can have dimensions of 9inch by 3 inches by 3inches)
Red crayon
Wooden ball that is 2.5cm in diameter mounted on a knitting needle
Knitting needle
Bicycle spoke
Glue
Razor blade
Small coin

Grade 9 Science Experiment 19 – Photosynthesis – How Plants use the Weather Elements to Feed Themselves

Purpose:

The purpose of this science fair project is to understand how plants use the process of photosynthesis to feed themselves. Green plants have the ability to capture light and store it as chemical energy in the food they produce. This food manufacturing process is referred to as “photosynthesis”. Essentially, the captured light contains carbon dioxide and water that is converted into food and oxygen for the plant. The oxygen plants produce is a major benefit for us as it allows us to breath in our earth environment.

This science fair project will test to see how light plays an integral in photosynthesis. We will determine whether there is starch in the leaf tissue. The starch is considered food in the leaf tissue.

Hypothesis:

The leaves exposed to light will have more starch in their leaf tissue than the leaves that were not exposed to light.

Variables:

Leaves that completely, partially, or not exposed to light
The amount of starch present on each leaf

Materials Needed:

Geranium plant
Iodine
Potassium Iodide crystals
Starch
Water
Dropper
Safety Goggles
Paper clips
Black paper
Two Beakers
One small beaker
Forceps
Boiling water
Hot alcohol

http://www.fun-science-fair-projects.com/documents/grade9exp18.html

Purpose:

The purpose of this science fair project is show how forces on the earth create magnetism through a series of magnetic demonstrations. The definition of magnetism is the following: “A class of physical phenomena that include the attraction for iron observed in lodestone and a magnet, are inseparably associated with moving electricity, are exhibited by both magnets and electric currents, and are characterized by fields of force (www.dictionary.com).”

A magnet has a north pole and south pole. Similar magnetic poles will repel each other while opposite magnetic poles will attract. Magnets have the strongest force at their poles. It is important to note that the magnetic poles of earth are not located at the poles as viewed on a map. They are instead at an angle from the pole. Perception of this angle depends on the location in which you reside on the earth.

Hypothesis:

The laws of magnetism will be tested. A metallic object can be magnetized. A magnetic force field exists in our environment.

Variables:

Strength of Magnetic force
Location in the earth’s magnetic field

Materials Needed:

Flat pieces of hard steel such as metal saw blades.
Strong magnet
Compass
Spring Balance with hook
Graph Paper
SOFT iron Nail