California Science Content Standards, Grade Two

Physical Sciences

The motion of objects can be observed and measured. As a basis for understanding this concept:

Students know the position of an object can be described by locating it in relation to another object or to the background.

EOW-69. Relative Motion - speed, acceleration

Students know an object's motion can be described by recording the change in position of the object over time.

Students know the way to change how something is moving is by giving it a push or a pull. The size of the change is related to the strength, or the amount of force, of the push or pull.

EOW-2. High Bounce - potential and kinetic energy, transfer of energy
EOW-17. Making Water Wiggle - electricity, static charges, attract and repel
EXP-Static Magic - electricity, static charges, attract and repel, induction
EXP-Polarized Paper - electricity, static charges, attract and repel, induction
EXP-Sorting Salt and Pepper - electricity, static charges, attract and repel, induction
EOW-89. Static Charges - induction, positive and negative charges
EOW-1. The Old Tablecloth Trick - inertia, friction
EOW-28. Obedient Coin - inertia, friction
EOW-24. Pick a String - inertia, Newton’s Laws of Motion
EXP-Newton's Laws of Motion - force and motion, Newton's Laws

Students know tools and machines are used to apply pushes and pulls (forces) to make things move.

Students know objects fall to the ground unless something holds them up.

EOW-75. The Science of Balance - center of gravity, balance
EOW-77. More Science of Balance - center of gravity, balance

Students know magnets can be used to make some objects move without being touched.

EXP-Weird Magnets - Magnetic poles, making magnets
EXP-Which is the Magnet - Magnetic poles, magnetic fields
EXP-Which is the Magnet, part 2 - Magnetic poles, magnetic fields
EXP-Rubber Magnets - Magnetic poles, magnetic fields

Students know sound is made by vibrating objects and can be described by its pitch and volume.

EOW-31. The Singing Glass - vibration, friction, pitch
EOW-36. Hear the Ocean? - ambient sound, resonance, vibration
EOW-54. Measuring Lightning - weather, lightning, speed of sound and light, math
EOW-38. Doppler Effect - sound waves, frequency
EOW-34. Grass Whistle - vibration
EOW-47. Bottle Tones and 48. Bottle Tones, Part 2 - pitch, vibration, scientific thought
EOW-52. Noisy String - vibration, resonance
http://thehappyscientist.com/science-video/bullroarer
EOW-57. Why Things Go Bang - sound waves, properties of gases
EOW-93. The Bullroarer - sound, vibration, pitch

Life Sciences

Plants and animals have predictable life cycles. As a basis for understanding this concept:

Students know that organisms reproduce offspring of their own kind and that the offspring resemble their parents and one another.

EOW-12. Seed Search - seed dispersal

Students know the sequential stages of life cycles are different for different animals, such as butterflies, frogs, and mice.

Students know many characteristics of an organism are inherited from the parents. Some characteristics are caused or influenced by the environment.

EOW-59. Nature Watching - animal behavior, processes of science

Students know there is variation among individuals of one kind within a population.

Students know light, gravity, touch, or environmental stress can affect the germination, growth, and development of plants.

Students know flowers and fruits are associated with reproduction in plants.

EOW-59. Nature Watching - animal behavior, processes of science

Earth Sciences

Earth is made of materials that have distinct properties and provide resources for human activities. As a basis for understanding this concept:

Students know how to compare the physical properties of different kinds of rocks and know that rock is composed of different combinations of minerals.

BCIS-What is a Mineral? - scientific terms, definition of a mineral
BCIS-Identifying Minerals - testing color, luster, hardness, cleavage/fracture, streak, and other properties
EOW-22. Is That a Diamond? - mineral identification, hardness, comparing objects
BCIS-Rocks - types of rocks, the rock cycle
EOW-81. Hydrothermal Quartz - minerals, solutions, boiling point
EXP-Sweet Geology - Igneous, sedimentary and metamorphic rocks
EXP-Solution Crystals - Crystal formation

Students know smaller rocks come from the breakage and weathering of larger rocks.

BCIS-Erosion - forces of erosion, origin of soil

Students know that soil is made partly from weathered rock and partly from organic materials and that soils differ in their color, texture, capacity to retain water, and ability to support the growth of many kinds of plants.

BCIS-Erosion - forces of erosion, origin of soil

Students know that fossils provide evidence about the plants and animals that lived long ago and that scientists learn about the past history of Earth by studying fossils.

EOW-25. Paleo Cookies - paleontology

Students know rock, water, plants, and soil provide many resources, including food, fuel, and building materials, that humans use.

Investigation and Science-Experimentation

Scientific progress is made by asking meaningful questions and conducting careful investigations. As a basis for understanding this concept and addressing the content in the other three strands, students should develop their own questions and perform investigations.

EOW-33. The Right Answer - getting the right answer
EOW-43. Candles in a Jar and 44. Candles in a Jar, Part 2 - combustion, density, scientific thought
EOW-47. Bottle Tones and 48. Bottle Tones, Part 2 - pitch, vibration, scientific thought
EOW-82. Science Fair Panic, part 1 - scientific method, science fair projects
EOW-82. Science Fair Panic, part 2 - scientific method, science fair projects
EOW-82. Science Fair Panic, part 3 - scientific method, science fair projects
EOW-82. Science Fair Panic, part 4 - scientific method, science fair projects
EOW-68. Oxygen? No! - combustion, composition of air, properties of gases
EOW-86. The Hottest Part of a Flame - scientific observation, combustion, energy

Students will:

Make predictions based on observed patterns and not random guessing.
Measure length, weight, temperature, and liquid volume with appropriate tools and express those measurements in standard metric system units.

Compare and sort common objects according to two or more physical attributes (e. g., color, shape, texture, size, weight).

Write or draw descriptions of a sequence of steps, events, and observations.

Construct bar graphs to record data, using appropriately labeled axes.

Use magnifiers or microscopes to observe and draw descriptions of small objects or small features of objects.
Follow oral instructions for a scientific investigation.