In this atom worksheet, students read about Dalton's contributions to the structure of the atom. They answer five questions about Dalton's ideas, the law of multiple proportions and the law of definite proportions.

This is a tremendous overview of the tiny atom. Journey through the history of human understanding of this basic building block of matter. Examine each of the sub-atomic particles in detail: neutrons, protons, electrons, quarks. Peruse...

In this energy and work worksheet, students determine the forces acting upon objects and the work accomplished in moving objects. Students identify the location on a diagram where kinetic energy is increasing and they describe the energy...

In this momentum activity, students solve 6 problems including finding the momentum of objects given their mass and velocity and applying the concepts of the conservation of momentum to solve for the speed and direction of moving objects.

Young scholars engage in an activity which demonstrates how potential energy (PE) can be converted to kinetic energy (KE) and back again. Given a pendulum height, students calculate and predict how fast the pendulum will swing by...

What are the three types of energy a ski jumper uses? If you said potential, kinetic, and heat, then you are correct. Scholars adjust the jumper's mass, jumper's form, and height of the start line in the simulation to display graphs of...

How do dams support bodies of water? Scholars engage in a hands-on STEM activity where they design, build, and test dams to learn about bodies of water and how humans use natural resources. They learn how criteria and constraints affect...

Is your class in the dark about photosynthesis? Shed some sunlight on an important biological process with a thoughtful activity. After answering questions to help determine their level of knowledge, learners work with chemical equations...

Here are nine motion problems for physics fanatics to solve. Topics are pretty typical: rifles firing bullets, freight train cars colliding, astronauts gliding through space, balls being thrown. Pupils compute recoil speed, combined...

Technology can help save money and add convenience. The resource offers a free textbook for a complete Chemistry course. The text begins with a review of the scientific method and continues to explain topics such as chemical bonding,...

How do law enforcement officers determine the strength of an explosion based on the movement of objects around the point of origin? Scholars inspect the relative mass and velocities of two cars before and after an explosion. They perform...

How high will it bounce? Groups determine the height different balls bounce off of different surfaces. By performing the necessary calculations, they determine the initial and final momentum of the balls. The included worksheet provides...

Planning a unit on simple machines? Save some time and energy with this collection of lessons and activities that explores how these devices are used in the real world to make life a little easier. 

Is it easy to make snow? Scholars use critical thinking skills as they investigate the concept of polymers by making snow. The class tests several different variables and takes measurements over the course of several days. They then...

Here's a presentation that not only covers momentum, impulse, conservation of momentum in both one and two dimensions, angular momentum, torque, and the moment of inertia, but offers many applied guided practice problems as well.

The tension of the 236 strings in a grand piano exert a combined force of 20 tons on the cast iron frame. The presentation includes topics such as work, forms of energy, conservation of energy, gravitational and elastic potential energy,...

Is momentum conserved in a collision, along with energy, or are they opposing forces? Pupils vary the mass and velocity of two bumper cars along with the type of bumper in order to answer this question. Worksheet and in-simulator...

How do humans get energy since they aren't mechanical and can't photosynthesize? Learners explore this question by relating potential energy in food to human energy levels. Scholars measure the change in mass and a change in...

How do police determine the speed of a car that has hit a stopped vehicle? Scholars determine the momentum of the car system both before and after a collision. They identify instances where the law of conservation of momentum appears to...

What prevents a roller coaster from falling when it goes upside down? Scholars experiment with a roller coaster simulation controlling the mass of the coaster, the height of the hill, and the radius of the loop. They learn which factors...

Roller coasters rely on both kinetic and potential energy, but how much total energy does a roller coaster need? Scholars vary the mass of a coaster and the height of the initial hill. Graphs showing the types of energy and total energy...

Once I told a chemistry joke, but there was no reaction. Get young chemists involved in changes and reactions with a presentation that begins with physical and chemical changes and chemical reactions. It moves on to chemical...

Physics apprentices analyze the impact of NASA's Impactor as it collided with the comet Tempel 1 in July of 2005. They calculate the mass and speed of the comet, along with the distance it might drift off of its orbit over time. This...

Students list three examples of momentum found in their local environment; describe the importance of mass and velocity on momentum; and determine what is necessary to produce the greatest amount of momentum within a particular system.