Environmental science enthusiasts show what they know at the end of the year by taking this full-fledged final exam. They answer multiple choice, graph interpretation, and essay analysys questions, 73 of them in all. Topics range from...

The National Chemistry Olympiad exams are comprehensive tests covering an entire  year of chemistry concepts. You can use them as practice for competing in the challenge, or simply as a review, or as an actual final exam for your...

In this first part of a two-part lesson, learners track and record the sun's azimuth using a solar panel. They graph and analyze the data to identify relationships among the time of day, the altitude and azimuth of the sun, and the...

Students distinguish between items with and without energy. In this energy instructional activity, students understand that natural resources power electrical apparatus and that energy needs to be saved.

In this satellite and solar cells activity, learners determine the electrical power generated by the solar cells on the IMAGE satellite. Students solve 3 problems including finding the usable area of the satellite, determining the power...

Students examine the advantages and disadvantages of the different sources of energy.  In this energy lesson students complete an experiment and worksheet.

Students explore solar energy, why we use it and how we use it.  In this renewable energy instructional activity students compare active and solar techniques.

In this biology worksheet, students complete 20 fill in the blank questions about eukaryotic cells. They identify the parts and functions of cell organelles.

Students conduct solar experiments. They calculate the solar gain and operate a solar cell devise used to generate electricity. Students compare and contrast solar energy gain with students in India. They analyze the difference...

In this biology worksheet, students read about the parts of both plant and animal cells and examine cell diagrams. They read about the function of cell parts before answering 11 online fill in the blank questions.

In this cosmic rays and solar cells worksheet, students read about how cosmic rays damage the electrical output of solar cells over time on satellites. Students use a graph of the solar power output compared to the year for the SOHO...

In this science worksheet, learners read about enzymes and nutrition. Students also answer 2 comprehension questions about the reading.

Students explore the numerous functions of cells in both plants and animals. Following a pre-assessment, they construct cell models and examine onion cell slides stained with iodine or dye. After participating in experiments on how to...

In this diffusion through a membrane worksheet, students fill in the blanks to complete 27 statements about cell membranes, the movement of molecules across the cell membrane, concentration gradients and diffusion.

Students identify and explore renewable energy options and then research, develop and install a renewable energy system in their school or community. Students identify the use of renewable energy sources in the north, demonstrate their...

Students calculate how much coal they use based on their electric power usage. In this environmental science lesson, students trace the history of coal mining in US. They write a letter to USPS to encourage them to create coal mining...

If you have solar car kits for your junior high schoolers, they can experiment with photovoltaic cell angle, light intensity, and aerodynamic design to discover what makes their car move more quickly. This is a classic activity to use...

First of three lessons, this is a great start to a unit on energy. As you demonstrate, learners discover different types of energy and how it is converted from one form to another. They then focus in on the generation of electricity by...

Fourth graders create analogies in poster format between a cell's organelles and their school. For example, 4th graders coul say a cell's mitochondria is like the cafeteria, both are a source of energy.

In this cell structure worksheet, students review the structure and function of eukaryotic cells. Students also compare and contrast an animal cell with a plant cell. This worksheet has 15 fill in the blank, 8 true or false, and 7...

In this cells worksheet, learners review the different types of cells. Students identify the organelles found in an animal cell and determine the function of these organelles. This worksheet has 14 matching, 6 fill in the blank, and 5...

In this cells worksheet, learners review cell organelles and their functions plus the different processes that take place within cells. This worksheet has 9 matching and 5 true or false questions.

Students explain how the components of a cell operate as a system. Students examine a bicycle and find out if parts were arranged differently, could the system still be carried out. They look at cells as well and see what function they...

Students, in groups, consider a scenario in which some structure of a cell has been changed. They explore how structural change affects the function of a cell and create a visual aid to illustrate their observations.