Chapters 1 and 2
Name two ways man changes ecosystems.
building things, planting trees, cutting down trees, polluting, littering, ....
What is a force?
a push or a pull
Electricity cannot flow without what two things?
a power source and a path
Tell two of the moon's surface features that are similar to the earth's.
mountains, valleys, solid, and rocky
What is energy?
the ability to do work
How does mimicry help animals survive?
By having a harmless animal look like one that is harmful, other animals avoid eating them.
What part of a plant contains the seeds?
the fruit
Explain the importance of poles and attraction in magnets.
Opposites attract; likes repel.
What determines the size of waves?
the speed of the wind and the depth of water
What is reflection?
the bouncing of light off an object
Differentiate between an incomplete and complete metamorphosis.
An incomplete metamorphosis only has three stages--egg, nymph, and adult while a complete one has four---egg, larva, pupa, and adult.
Name three of the six simple machines.
lever, wheel and axle, pulley, inclined plane, screw, wedge
Is your shadow longer at noon or at 6PM?
6PM
Are beliefs about the moon's origin based on faith or science?
faith
What is an adaptation?
a change in a characteristic of a living thing that allows it to survive in its environment
What is the difference between an environment and an ecosystem?
An environment is only the non-living things in an area while an ecosystem is the living and non-living things in an area.
Name three ways a plant can be pollinated.
self pollination, animal pollination, wind pollination (Specifics can count as separate examples.)
What is an electromagnet?
a temporary magnet that forms when electric current flows through a wire coiled around a metal core
Walk me through the phases of the moon.
new moon, waxing crescent, first quarter, waxing gibbous, full moon, waning gibbous, third quarter, waning crescent
What does lunar mean?
of, or related to, the moon
What does arthropod mean?
"jointed foot"
Demonstrate a simple machine.
lever, wheel and axle, pulley, inclined plane, screw, and wedge
Illustrate transparent, translucent, and opaque.
transparent - allows all light to pass through; translucent - allows some light to pass through; opaque - does not allow any light to pass through
What causes deep ocean currents?
temperature changes and the salinity (saltiness) of the water
What are cotyledons? (We learned about monocots and dicots.)
the stored food inside a seed