Comparing How Sound Moves Through Liquids and Gases |
text page |
states of matter, density, sound, energy |
Creeping Carpets |
text page |
critical thinking, observation, model, motion, engineering, friction, structure and function, investigations and experiments, force and interactions |
Is Gravity a Theory or a Law? |
text page, free |
gravity, hypothesis, theory, and law |
Teach It Right the First Time. |
text page, free |
states of matter, critical thinking, information processing, misconceptions, matter |
Dancing Raisins |
text page |
mass, solution, states of matter, observation, density, structure and function, water, force and interactions |
Yellowing Paper |
text page, free, checked |
electromagnetic spectrum, science fair, Variables and controls, critical thinking, observation, light, investigations and experiments, physical-chemical change, energy |
Seeing Dark Lines |
text page |
electromagnetic spectrum, light, waves |
Newton's Laws |
text page |
mass, newton's laws, critical thinking, inertia, motion, measurement, force and interactions, energy |
What is a Higgs boson, and why should I care? |
text page, blog, free, checked |
mass, atoms, critical thinking, model, information processing, misconceptions, hypothesis, theory, and law, matter |
Magnetizing and Demagnetizing a Paperclip |
text page |
critical thinking, engineering, magnetism, structure and function |
Light from a Lifesaver |
text page |
light, electricity, energy |
Lightning in Johnson Canyon |
photography, free |
atmosphere, states of matter, static electricity, weather, water cycle, electricity |
718 |
photo challenge |
reaction, light, energy |
421 |
photo challenge |
tectonics, force and interactions |
894 |
photo challenge |
weather, water cycle, electricity |
269 |
photo challenge |
electromagnetic spectrum, refraction, reflection, light, waves |
719 |
photo challenge |
climate, weather, density, water cycle, mixture |
414 |
photo challenge |
refraction, reflection, weather, light |
876 |
photo challenge |
weather, light |
113 |
photo challenge, checked |
moon, gravity |
410 |
photo challenge |
engineering, pressure, structure and function, force and interactions |
405 |
photo challenge |
electricity, waves, energy |
106 |
photo challenge, checked |
electricity, energy |
401 |
photo challenge |
thermal energy, weather, light, sound, waves |
384 |
photo challenge |
sun, critical thinking, observation, light, moon, solar system, waves |
101 |
photo challenge, checked |
electricity, energy |
382 |
photo challenge |
invertebrates, static electricity, adaptation, arthropods, plant parts, behavior, reproduction, animals |
374 |
photo challenge |
atmosphere, reflection, weather, light, water cycle |
353 |
photo challenge |
senses, adaptation, refraction, vertebrates, light, mammals, animals, anatomy, evolution |
331 |
photo challenge, free |
static electricity, critical thinking, weather, engineering, electricity, structure and function, misconceptions, safety |