HW: Experimental Design

A team of marine biologists is studying the effect of different types of underwater lighting on the behavior of nocturnal fish. They predict that blue LED lighting will result in more active swimming behavior compared to regular lighting. The biologists setup two identical aquariums with the same number of fish. There is a camera recording the fish' behavior for an hour in both aquariums. Aquarium A receives regular lighting. Aquarium B receives blue LED lighting.

What is the hypothesis?

• The lighting conditions depend on the fish.

• The behavior of fish is independent of the lighting conditions.

• Regular lighting will result in more active swimming behavior compared to blue LED lighting

• Blue LED lighting will result in more active swimming behavior compared to regular lighting

Tags

NGSS.MS-LS2-4

A team of marine biologists is studying the effect of different types of underwater lighting on the behavior of nocturnal fish. They predict that blue LED lighting will result in more active swimming behavior compared to regular lighting. The biologists setup two identical aquariums with the same number of fish. There is a camera recording the fish' behavior for an hour in both aquariums. Aquarium A receives regular lighting. Aquarium B receives blue LED lighting.

What depends on what?

• The lighting conditions depend on the fish' behavior.

• The behavior of fish depends on the lighting conditions.

A team of marine biologists is studying the effect of different types of underwater lighting on the behavior of nocturnal fish. They predict that blue LED lighting will result in more active swimming behavior compared to regular lighting. The biologists setup two identical aquariums with the same number of fish. There is a camera recording the fish' behavior for an hour in both aquariums. Aquarium A receives regular lighting. Aquarium B receives blue LED lighting.

What is the independent variable?

• The number of fish

• The behavior of the fish

• The size of the aquarium

• The duration of observation

• The lighting conditions

Tags

NGSS.MS-LS2-4

A team of marine biologists is studying the effect of different types of underwater lighting on the behavior of nocturnal fish. They predict that blue LED lighting will result in more active swimming behavior compared to regular lighting. The biologists setup two identical aquariums with the same number of fish. There is a camera recording the fish' behavior for an hour in both aquariums. Aquarium A receives regular lighting. Aquarium B receives blue LED lighting.

What is the dependent variable?

• The number of fish

• The behavior of the fish

• The size of the aquarium

• The duration of observation

• The lighting conditions

A team of marine biologists is studying the effect of different types of underwater lighting on the behavior of nocturnal fish. They predict that blue LED lighting will result in more active swimming behavior compared to regular lighting. The biologists setup two identical aquariums with the same number of fish. There is a camera recording the fish' behavior for an hour in both aquariums. Aquarium A receives regular lighting. Aquarium B receives blue LED lighting.

What are some constant/controlled FACTORS?

• The number of fish

• Aquarium A

• The size of the aquarium

• The duration of observation

• The lighting conditions

Tags

NGSS.MS-ETS1-1

A team of marine biologists is studying the effect of different types of underwater lighting on the behavior of nocturnal fish. They predict that blue LED lighting will result in more active swimming behavior compared to regular lighting. The biologists setup two identical aquariums with the same number of fish. There is a camera recording the fish' behavior for an hour in both aquariums. Aquarium A receives regular lighting. Aquarium B receives blue LED lighting.

What is the control group?

• Aquarium A

• Aquarium B

Tags

NGSS.MS-ETS1-1

A team of marine biologists is studying the effect of different types of underwater lighting on the behavior of nocturnal fish. They predict that blue LED lighting will result in more active swimming behavior compared to regular lighting. The biologists setup two identical aquariums with the same number of fish. There is a camera recording the fish' behavior for an hour in both aquariums. Aquarium A receives regular lighting. Aquarium B receives blue LED lighting.

What is the experimental group?

• Aquarium A

• Aquarium B

Tags

NGSS.MS-LS2-4