Grade 9 Science: Jan. 16 – Work/Study Period

For the Lab Exam tomorrow:

Here are more examples of possible dry labs:

The graph shows the population of fish in a certain lake and their tolerance range.

i) What is the maximum population size of the fish?

ii) What factors would lead to this maximum size?

iii) What is the fish’s tolerance range.

iv) If 10 000 fish were found in the lake, what could you say about the temperature?

v) If the temperature were to drop to 10° for a long time, then moved back up to 20°, what would happen to the fish population?

vi) If the temperature were to drop to 0° for a long time, then moved back up to 20°, what would happen to the fish population?

Questions for H-R diagram.

i) Based on the H-R diagram, how would you characterize our Sun?

ii) Which stars are warmer than our sun?

iii) Which stars are cooler than our sun?

iv) Which types of stars are the brightest?

v) If a star had temperature of 2000° and a magnitude of -5, what kind of star would it be?

vi) Which stars are younger? Which ones are older?

Grade 9 Science