Chemistry Final Exam Review 2019/2020

An experiment is conducted to test how different cleats change an athletes running speed.  Six different types of cleats are tested and the 100m run time is recorded.  What is the independent variable?

• The type of cleat
• The run time
• The 100 meters
• The athlete

A test is set up to test which brand of soda creates the biggest foam explosion when adding a Mentos candy.  Three different sodas were tested. They measured the height of the foam eruption.   What is the dependent variable?

• Brand of soda
• Number of mentos candies used
• Height of foam eruption
• Temperature of soda

Tags

NGSS.MS-PS1-2

Which of the following is a quantitative observation?

• The bird is very colorful.
• The bird has 4 different colors on him.
• The bird has many, many feathers.
• It is a bird. 

The yard is wet so it must have rained last night is an example of a (an)

• constant
• control
• inference
• quantitative data

Testing a hypothesis often involves a(n):

• answer
• experiment
• problem
• safety check

Tags

NGSS.MS-ETS1-4

Stephen predicted that seeds would start to grow faster if an electric current traveled through the soil in which they were planted is a(n) example of what step.

• question

• experiment

• form a hypothesis

• analyze/conclusions

Johnathan’s data showed that household cockroaches moved away from raw cucumber slices is (a)n example of what step?

• question

• experiment

• form a hypothesis

• analysis/conclusions

Tags

NGSS.MS-LS1-8

NGSS.MS-LS2-1

Rene grew bacteria from the mouth on special plates in the laboratory. She placed drops of different types of mouthwash on bacteria on each plate is an example of what step?

• question

• experiment

• form a hypothesis

• analysis/conclusion

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

Experiment: Sendel wants to see if taking the backroads to work is faster than taking the highway during rush hour.

In Sendel's driving experiment, what is the independent variable?

• What time of day she drives

• The route she takes to work

• The speed at which she drives

• The time is takes to get to work

Experiment: Sendel wants to see if taking the backroads to work is faster than taking the highway during rush hour.

In Sendel's driving experiment, what is the control group?

• Highway

• Backroads

• Time she drives to work

• Rush hour