Transcript 6th Grade Exam Review - Ms. Moreno's Science Classes

6th Grade SBA Review
2015
• 1. You notice a rock getting smaller and
changing shape over time. What causes
this?
• Weathering by wind, rain removed some
parts.
• 2. What type of weathering ate away the
chalk in the lab we did?
• Chemical weathering
• 3. Convection in air or liquids takes place
because
• As liquids and air heat up they become
less dense and rise
• 4. Cool air masses tend to
• Sink and go under warm air masses
because cold air is more dense
• 5. Clouds are really
• Condensation droplets that are floating
since they are so small
• 6. The ozone hole is caused by
• The use of chlorofluorocarbons (CFC’s) in
air conditioning and refrigerators that was
allowed to escape into the atmosphere
and float up and break the 3 ozone
molecules apart
• 7. Which of these is a renewable energy
source?
• Natural gas
• Coal
• Wood (biomass)
• copper
• Wood which can be called Biomass
• 8. Which of earth’s spheres is frozen?
• Cryosphere
• 9. In the summer days at the beach the
water is ________ than the land and
creates a __________________.
• In the summer days at the beach the water
is _COOLER_______ than the land and
creates a _SEA BREEZE.
• 10. A green film of algae in a pond is an
example of the human impact from
____________.
• Fertilizers which cause algae growth
called eutrophication
• 11. The spinning of the Earth that causes
winds to curve is called the
• Coriolis Effect
• 12. What is a convergent boundary?
• A place where plates move toward each
other and often create mountains
• 13. What kind of boundary is creating the
mid-ocean ridge?
• A divergent boundary where the plates are
moving apart and new magma is risng up.
• 14. Most geologists rejected Alfred
Wegener’s idea of continental drift
because
• Could not explain the force that moved
continents through the oceans
• 15. In the process of sea-floor spreading,
Which part of the sea floor is more densethe one by the continent edge or the new
one in the middle?
• The crust by the continent since it is
cooled
• 16.The convection currents flow in which
of Earth’s layers?
• Asthenosphere (upper mantle)
• 17. What is the difference between earth’s
inner and outer cores?
• The inner core is solid metal and the outer
core is liquid metal.
• 18. How is the sun’s layers similar to
earth’s?
• The sun has a hot core and heat passes
out to create a convection layer. Earth has
a hot core and heat passes through its
layers and out to the asthenosphere where
convection currents occur.
• 19. How do convection currents transfer
energy?
• Energy is transferred by the movement of
molecules in matter—matter is heated and
rises and cools and falls where it is next to
the heat source and heats again and rises
and the cycle is repeated over and over.
• 20. Why do some terrestrial planets and
our moon get more craters that others?
• The earth has an atmosphere which
creates friction as the object falls and
burns up before it hits earth. Other
terrestrial planets such as Mercury and the
moon do not have an atmosphere.
• 21. Which part of the water cycle occurs
when vapor is cooled and becomes a
liquid?
• condensation
• 22. What causes spring tides? (Not the
season spring)
• When the moon and the sun are both
pulling on earth from the same direction.
• 23. Early astronomers believed in the
geocentric model of our solar system.
Define the geocentric model.
• The earth is the center of the solar system
and even the sun orbited earth.
• 24. How is the period of revolution affected
by the AU, distance from the sun? In this
lab we did what did your team conclude?
• The smaller the AU distance from the sun,
the shorter the period of revolution.
• 25. We did a science investigation and
built and launched alka- seltzer rockets.
List the independent variable, the
dependent variable and some constants.
• Independent was the mass
• Dependent was the rocket height
• Constants included same canister, same
amount of water, same amount or alkaseltzer, same launch pad and same
person launching
• 26. When you conduct an experiment you
repeat it many times to verify your data.
What is it called when another person
conducts your exact experiment?
• Replication
• 27. Lisa notices that the water levels at a
beach rise and fall during the day. What is
this called?
• Tides
• 28. The beach sometimes has sand in
different locations. What process causes
this?
• Deposition of sediment
• 29. What is it called when rainfall washes
away soil?
• erosion
• 30. Which sphere is in all 4 other spheres?
• biosphere
• 31. Many processes change earth’s
surface. Name one that occurs slowly.
• Plate movements build mountains, create
new crust at the mid-ocean ridge and
change earth’s physical appearance
slowly.
• 32. The wearing away of rock by the
grinding of rocks together or by sand
rubbing it is called
• abrasion
• 33. What are the 2 conditions that allow
geologists to apply the Law of
Superposition to determine the
comparative age of rock layers?
• The layers must be undisturbed and
horizontal to say the bottom layer is the
oldest and the top is the youngest
34. The amount of water vapor in air is
called
• humidity
• 35. List some benefits the earth receives
from our atmosphere that would not exist if
we did not have one?
• Protects life from harmful UV rays
• Allows Earth to be not too cold or not too
hot “the Goldilocks Condition”
• We have weather
• 36. A natural satellite is called a
• moon
• 37. Scientists think the moon was formed
when
• a large object struck Earth, and material
from both bodies combined and was
captured by Earth’s gravitational orbit
• 38. What is it called when one tectonic
plate sinks below another?
• subduction
• 36. The model in which the sun is at the
center of the system of planets is called
the
• Heliocentric model
• 40. The tendency of a moving object to
continue moving in a straight line or a
stationary object to remain in place is
called
• inertia
• 41. The sun produces energy by
• Nuclear fusion
• 42. What does geothermal mean?
• Geothermal is heat caused by Earth’s core
and causes earthquakes, volcanoes,
mountains, etc.
• 43. Name a type of radiation from the
Electromagnetic Spectrum that is not
harmful.
• Radio waves, Microwaves, visible light,
• 44. Spectrographs help astronomers
determine the
• Temperature of, and elements in stars
• 45. How can humans cause
desertification?
• By deforestation: cutting down trees, and
overgrazing of animals which allows the
topsoil to blow away.
• 46. What causes seasons on earth?
• Planet is tilted on its axis
• 46. The distance light travels in a year is
called a
• Light year