A fossil is the preserved remains or impressions of a plant, animal, or other organism from a past geological age. Fossils are typically found in sedimentary rock and provide important clues about the past.
How are Fossils Formed?
Fossils are formed through a process called fossilization. This occurs when living organisms or their remains are buried in sediment. Over time, the organic material is replaced by minerals, creating a fossil.
Types of Fossils
There are several types of fossils, including:
Body fossils: These are the actual remains of an organism, such as bones, teeth, or shells.
Trace fossils: These are evidence of the activity of ancient organisms, such as footprints, burrows, or coprolites (fossilized feces).
Plan and carry out investigations that explain transference of energy from place to place by sound, light, heat, and electric currents.
Demonstrate that electric circuits require a complete loop through which an electric current can pass.
Design, construct, and test a device that changes energy from one form to another (e.g., electric circuits converting electrical energy into motion, light, or sound energy; a passive solar heater converting light energy into heat energy).