Fourth Grade Unit supporting the Michigan Science K-7 Content - Battle Creek Area - Mathematics & Science Center
Terms in this set (...)
Ability to support life
The ability to support life refers to the conditions and elements necessary for organisms to survive. (air, water, food, light)
Ancient life forms
Ancient life forms are very old. They existed many thousands and millions of years ago.
Apparent movement is the appearance of motion. The sun and moon appear to move across the sky but it is the rotation of the Earth tat gives the apparent motion.
Breathable atmosphere refers to the combination of gases in the air that can support life.
A calendar is a way of dividing time into days, months, and years.
Capable is to have the qualities or ability to do something. The Earth is capable of supporting life.
Cloud cover tells how much of the sky has clouds. Cloudy, non-cloudy, and fog are words to tell about cloud cover.
A cycle is a series of events that repeat over and over. The moon phases are a cycle.
Data is information about something that can be used to find out about different ideas.
A day is the amount of time it takes for the Earth to spin around one complete turn.
A diameter is the distance across the center of a circle or sphere.
The Earth is the planet on which people live. It is a sphere that orbits the sun.
Earth's axis is an imaginary straight line that runs through the North and South Poles. The Earth rotates or spins on its axis.
Evidence is what is observed, read, or discovered and supports an idea or fact.
An extinct plant or animal once lived on the Earth but has died.
A fossil is the remains or evidence of a plant or animal that lived long ago.
Modern life forms
Modern life forms are plants and animals that exist right now or have existed with modern history.
A month is the approximate amount of time it takes the moon to orbit the Earth, about 29 days. Calendar months fall between 28 and 31 days.
The moon is a rock satellite that orbits the Earth. It is the brightest object in Earth's night sky. The moon does not produce its own light, but reflects light from the sun.
The moon phase, or phases of the moon, is the visible part of the moon that reflects the sun and is visible from Earth.
A natural satellite refers to orbiting objects that are not man-made. The moon is a natural satellite of Earth.
Night occurs when that part of the Earth is turned away from the sun and it is darker outside.
Observation is to look at something closely, using the senses to find out about it.
To orbit is to move completely around another object. The Earth orbits the sun in one year and the moon orbits the Earth in 29 1/2 days.
Point of reference
A point of reference is a background or non-moving object in the background used in describing the motion of another object.
Precipitation happens when water in some form falls from clouds to the ground. Rain and snow are examples of precipitation.
Produce light refers to the ability to generate its own light. The sun produces light. The Earth and moon reflect light.
Reflect refers to the return of light rays from the sun off the moon. The light rays from the sun are reflected off the moon's surface.
Relative distance is the measurement of how far one object is compared to another object.
Relative size relates to the comparison of the size of one object to another.
A revolution is the completion of one orbit around a center. The Earth completes one revolution around the sun in one year. The moon revolves around the Earth in 29 1/2 days.
Rock layers are layers of rock formed over millions of years. Fossils are found in some rock layers.
A rotation is the completion of one spin or turn around its axis. The Earth completes one rotation in one day.
A season is one of four quarters into which a year is commonly divided.
Weather that could be dangerous to living things is called severe weather. People need to follow safety rules to protect themselves during this type of weather. Blizzards, thunderstorms, and tornadoes are examples of severe weather.
To spin is to make one complete turn. The Earth spins one complete turn in one day.
The sun is the nearest star to the Earth. It is a sphere of burning gases. The sun gives off heat and light.
Temperature is a measurement of how hot or cold something is. Temperature is used to help describe weather.
A thermometer is a tool that measures how hot or cold something is. The thermometer measures temperature.
To tilt is to move or shift so as to slant or tip.
Visible shape of the moon refers to the shape of the moon that is visible from Earth.
Volume is the amount of space an object or substance takes up.
The weather is a description of what happens in the air over the surface of the Earth. Wind, precipitation, cloud cover, heat and storms are all part of weather.
A week is the time it takes for the Earth to spin seven complete times. A week is 7 days.
Wind is air that is moving. Calm, breezy, and windy are some words used to describe wind speed.