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Extra Q's (Exp, Var)

Last updated about 3 years ago

7 questions

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Question 1

1.

Identify the independent variable given the context below.
Context: An experiment was done to see if the temperature of the air in the oven is related to the time it takes to bake a cake.

type of cake used

temperature of the air in the oven

the baking time of the cake

Question 2

2.

Identify the dependent variable given the context below.
Context: An experiment was done to see if the temperature of the air in the oven is related to the time it takes to bake a cake.

type of cake used

temperature of the air in the oven

the baking time of the cake

Question 3

3.

Identify a control variable given the context below.
Context: An experiment was done to see if the temperature of the air in the oven is related to the time it takes to bake a cake.

type of cake used

temperature of the air in the oven

the baking time of the cake

Question 4

4.

Identify a scientific hypothesis that can be tested by the situation below.
Situation: An experiment was done to see if the temperature of the air in the oven is related to the time it takes to bake a cake.

Scientific hypothesis:  If the size of the oven increases then the baking time will increase.

Scientific hypothesis:  If the temperature of the air in the oven increases then the baking time will decrease.

Scientific hypothesis:  If the size of the cake increases then the baking time will increase.

Question 5

5.

Experiment: A company manager tests if changing the lighting conditions in a packing room will
change productivity (number of products packed). Using the same workers, the room is lit up with
400 watts of power one day and the next day the room is kept at the usual lighting of 600 watts.

Choose the choice below that represents the independent variable in this experiment.

number of products packed

Type of room used

lighting conditions of room used

number of workers

Question 6

6.

Experiment: A company manager tests if changing the lighting conditions in a packing room will
change productivity (number of products packed). Using the same workers, the room is lit up with
400 watts of power one day and the next day the room is kept at the usual lighting of 600 watts.

Choose the choice below that represents the dependent variable in this experiment.

number of products packed

Type of room used

lighting conditions of room used

number of workers

Question 7

7.

Experiment: A company manager tests if changing the lighting conditions in a packing room will
change productivity (number of products packed). Using the same workers, the room is lit up with
400 watts of power one day and the next day the room is kept at the usual lighting of 600 watts.

Choose the choice below that represents a control variable in this experiment.

number of products packed

Type of room used

lighting conditions of room used

number of workers