Applying Newton's first law of motion
Applying Newton's first law to answer some true/false statements about why objects move (or not).
Applying Newton's first law to answer some true/false statements about why objects move (or not).
These three short online lessons discuss asteroids, comets and meteors.
Plant cells have a cell wall in addition to a cell membrane, whereas animal cells have only a cell membrane. Plants use cell walls to provide structure to the plant. Plant cells contain organelles called chloroplasts, while animal cells do not. Chloroplasts allow plants to make the food they need to live using photosynthesis.
Figuring out the acceleration of ice down a plane made of ice.
Basic primer on Newton's First Law of motion.
Other objects in the solar system are discussed in this online textbook viz. asteroids, meteorites, comets and dwarf planets.
Overview of animal and plant cells. Topics include cell walls, vacuoles, chloroplasts, peroxisomes, lysosomes, mitochondria, etc.