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38 Cards in this Set

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When we see the sun in the daytime sky, we see the sun as it looked a few minutes ago. When we look at the stars in the night sky, we are seeing the star as it looked in the distant past. Why is this true? LOC 6
The light from the sun reaches earth in about eight minutes. The light from a star takes many years traveling through space to reach the earth.
How do glaciers cause erosion?
Glaciers are the plows of the earth. Glaciers can shape the land over which they move carving out huge valleys. Glaciers can transport boulders weighing hundreds of pounds.
What is inertia?

Inertia is the tendency of an object at rest to stay at rest or an object in motion to stay in motion.
What is an observation?
What is the function of the nucleus?
The nucleus is the "boss" or "director" of a cell. It controls a cell's activities and contains its genetic material.
What is an inference?
an opninion
an educated guess
a conclusion
A high pressure system usually brings what type of weather?
What is weathering?
The breaking down of rocks into smaller pieces.
How can an animal adapt to a climate change?
An animal can migrate or hibernate.
What are the two types of weathering?
physical and chemial
Would phytoplankton be a consumer or a producer?
LOC 13
Give some examples of physical weathering?
1. When water seeps into a crack in a rock, it freezes(expands) and breaks the rock apart.
2. Plant roots can also force rocks apart.
How is the speed of sound and the medium through which sound travels related?
LOC 11
The denser the medium; the higher the speed of sound.
Where do fossil fuels come from?
Dead plants and animals
Give an example of competition.

When organisms compete for food or space.
Give an example of chemical weathering.
1. Acid rain.
2. When water reacts with an iron-containing mineral in a rock, the iron is changed into rust which can crumble a rock.
Why is a polar bear's skin black? What is a solar collector painted black?

LOC 11
Black absorbs more light as heat energy.
Name some internal forces that can change the surface of the earth.
volcanoes and earthquakes
What makes up white light?
different colors
What is deposition?
The depositing of sediments.
Newton's first law is also know as what other law?

Law of Inertia
What is the final step in the erosion process?
How are the colors in the rainbow different?

Each color has a different wavelength and frequency.
What does the Earth's rotation cause?
Day and night
In the water cycle, when water evaporates, is it a chemical or physical change?

Phyical change.
What is rotation?
The spinning of earth around its axis.
What is spontaneous generation?
LOC 17
It a hypothesis stating that nonliving things can change into living things.
What is revolution?
The motion of Earth traveling around the sun.
If a liquid is heated, what happens to both its energy content and the speed of its particles?
The energy increases; the speed increases.
What causes the seasons to change?
1. the tilt of Earth's axis
2. Earth's revolution around the sun
Name some fossil fuels.
1. oil
2. natural gas
3. coal
What is the water cycle?
It is the process that moves water moves back and forth between the lithospere and atmosphere.
In summer, are the daylight hours longer or shorter?
What are the four parts of the Water Cycle?
1. Evaporation
2. Condensation
3. Precipitation
4. Collection(runoff)
A low pressure system usually causes what type of weather?
Does a sound wave travel faster or slower through a more dense medium?
How can a plant adapt to a climate change?
A plant can go dormant. In this condition, a plant stops growing and its metabolism is minimal.
What unit would you use to measure an angle of reflection?