Monday 9/17/12
1. Water (H20) consists of hydrogen and water. How does water differ from hydrogen and
water? How does water differ from hydrogen or oxygen alone?
A. Water has a lower boiling point
B. Water has a lower melting point
C. Water has a higher freezing point
D. Water has a lower density
2. Which of the elements below is a good conductor of heat and electricity?
A. copper
B. fluorine
C. hydrogen
D. oxygen
Tuesday 9/18/12
1. In what ways can a compound differ from the elements that combine to form it?
A. A compound can have a different color
B. A compound can have a different boiling point
C. A compound can have a different density
D. All of the above
2. Richard mixed together oil and vinegar to make salad dressing. He added too much oil
and wants to remove some of it from the mixture before he adds the rest of the
ingredients. How can he remove some of the oil?
A. let the oil rise to the top of the mixture and then pour some out
B. shake the mixture well and then pour it in a sieve
C. heat the mixture so the oil evaporates and leaves the vinegar behind
D. cool the mixture so the oil settles to the bottom of the vinegar
Wednesday 9/19/12
1. Jody thoroughly mixed table salt with water. How could she separate the salt from the
water?
A. stir the water until the salt separates
B. let the water evaporate in a warm place
C. freeze the water in an ice cube tray
D. wait 5 minutes for the salt to settle
2. When plants make food through photosynthesis which energy transformation occurs?
A. heat energy > chemical energy
B. light energy> chemical energy
C. chemical energy> light energy
D. mechanical energy> chemical energy
Thursday 9/20/12
1. Which question about a predator species and its prey could be answered with
certainty by gathering data in a scientific investigation?
A. How many predators and prey are there right now?
B. How many predators and prey will be there be in 10 years?
C. Why do the predators hunt this particular prey species?
D. What is the chance that the prey species will go extinct?
2. What role in the food web is played by the hawk?
A. decomposer
B. primary consumer
C. secondary or tertiary consumer
D. producer
Friday 9/21/12
1. Which of the following questions could be investigated with this experimental setup
and procedure?
A. How are algae able to survive without sunlight?
B. How do algae produce oxygen without sunlight?
C. How productive is the photosynthesis of algae?
D. All of the above
2. Which organisms are producers in most aquatic food webs?
A. zooplankton
B. small fish
C. phytoplankton
D. filter feeders