Everything grade 1 science expects a child to be able to say, in 35 short statements. Read it together before a test, or use it to decide which skill quiz to do next.
Sound and Vibrations
- Sound is made when something vibrates, like a guitar string or a drum head.
- Vibrating means moving back and forth very fast, too fast to see clearly.
- You can feel your throat vibrate when you hum with your hand on it.
- Sound travels through the air to your ears, and then you hear it.
- If you stop the vibration, the sound stops right away.
Words to know: sound, vibrate, vibration, hear, loud, soft
Light, Seeing, and ShadowsLight, Seeing, and Shadows
- We see things because light bounces off them and goes into our eyes.
- In a completely dark room with no light at all, you cannot see objects.
- A shadow is a dark spot where an object blocks the light.
- Light goes through clear glass, but wood and metal block it.
- The sun, a lamp, and a flashlight are all sources of light.
Words to know: light, shadow, block, see, clear, dark
Communicating with Light and SoundCommunicating with Light and Sound
- People use light and sound to send messages over a distance.
- A flashing flashlight can tell a friend across the yard to come home.
- A fire alarm uses a loud sound to warn everyone in the building.
- A red traffic light uses light to tell drivers to stop.
- A phone lets you send your voice to someone far away.
Words to know: communicate, message, signal, light, sound, distance
Plant and Animal PartsPlant and Animal Parts
- Every part of a plant or animal has a job that helps it live.
- Roots hold a plant in the ground and soak up water from the soil.
- Leaves catch sunlight, and stems hold the plant up.
- Animals use legs, wings, or fins to move from place to place.
- Eyes, ears, and noses help animals find food and stay safe.
Words to know: root, stem, leaf, part, protect, survive
Parents, Offspring, and Growing UpParents, Offspring, and Growing Up
- A young animal is called offspring, and it comes from its parents.
- Young animals look a lot like their parents but are not exactly the same.
- Two puppies from the same dog can have different spots and different sizes.
- Parents help their babies live by feeding them and keeping them safe.
- A baby bird chirps loudly so its parent knows to bring food.
Words to know: parent, offspring, young, alike, different, care
Patterns in the SkyPatterns in the Sky
- The sun rises in the east in the morning and sets in the west.
- The moon changes shape in a pattern that repeats about once each month.
- Sometimes you can see the moon in the daytime sky.
- Stars are in the sky all day, but the bright sun hides them.
- Sky patterns happen again and again, so we can predict them.
Words to know: sun, moon, star, pattern, east, west
Daylight Through the YearDaylight Through the Year
- Daylight is the time between sunrise and sunset each day.
- Summer days have more hours of daylight than winter days.
- In winter it can be dark outside when you eat dinner.
- In summer the sun is still up when you get ready for bed.
- The amount of daylight changes slowly through the year, then repeats.
Words to know: daylight, sunrise, sunset, season, summer, winter