4) When the sun warms water, which resulting process occurs? * A precipitation
B runoff
C evaporation
D condensation
5) Students observed a piece of iron change from shiny to rusty. What caused this change? *
A a chemical reaction
B a heat reaction
C a cold reaction
D a physical reaction
6) Which is the best example of the transfer of heat by radiation? *
A water boiling
B ice melting
C a hot air balloon rising
D a lightbulb glowing
7) Jason fills a glass container completely with water and screws the lid on tightly. He places the container in a freezer. Which will most likely result? *
A The container will prevent the water from freezing.
B The water will freeze and take up less space in the container.
C The water in the container will expand when it freezes and cause the container to crack.
D The container will absorb heat from the water, causing it to crack.
8) Which is most responsible for the changes in seasons? *
A the jet stream
B the ocean currents
C the distance from Earth to the sun
D the tilt of Earth on its axis
9) Which type of animal usually eats both producers and consumers? *
A an omnivore
B a carnivore
C a herbivore
D a predator
10) In North Carolina, the wind is blowing from the north. If the wind changes direction and begins to blow from the south, what will most likely result? *
A The temperatures will increase.
B The temperatures will decrease.
C The air pressure will increase.
D The wind speeds will decrease.
11) Which best explains why a storm that affects an area in the western United States may affect an area in the eastern United States a few days later? *
A The jet stream winds blow storms from east to west.
B The jet stream winds blow storms from west to east.
C Cool Gulf Stream water causes storms to form in the east.
D Warm Gulf Stream water causes storms to form in the west.
12) Which is a characteristic of most single-celled organisms? *
A They have a complex nervous system.
B They contain several different types of cells.
C They perform all life processes.
D They have a circulatory and a respiratory system.