Experimental Design

Maya designed an experiment to answer the following question: How does the amount of water given to a lima

bean seed affect how tall it grows?

Multiple answer!!!! Which things does Maya need to keep the same in her experiment?

• the amount of water each plant gets

• the amount of soil

• the type of plant

• the amount of sunlight each plant gets

Maya designed an experiment to answer the following question: How does the amount of water given to a lima

bean seed affect how tall it grows?

In this experiment, what variable should Maya CHANGE?

• the amount of water

• the kind of plant

• the type of soil

• the amount of sunlight it gets

Maya designed an experiment to answer the following question: How does the amount of water given to a lima

bean seed affect how tall it grows?

Which tool will Maya use when she is collecting her data on the height of the lima bean plants?

• thermometer

• stopwatch

• beaker

• ruler

Anthony designed an experiment to answer the following question: How does the temperature of water affect the time it takes for a sugar cube to dissolve?

Which factor should Anthony CHANGE in his experiment with the sugar cubes?

• the amount of water he uses

• the size of the sugar cubes

• the temperature of the water

Anthony designed an experiment to answer the following question: How does the temperature of water affect the time it takes for a sugar cube to dissolve?

Multiple answers!!! Which things should Anthony keep the same in his experiment?

• the amount of water

• the size of the sugar cubes

• the temperature of the water

Xavier’s team designed an experiment to answer the following question. How does the surface of a ramp affect how far a toy car rolls?

Which factor should Xavier change in the experiment?

• the kind of car

• the height of the ramp

• the surface of the ramp

Xavier’s team designed an experiment to answer the following question. How does the surface of a ramp affect how far a toy car rolls?

Which factor should Xavier keep the same in the experiment?

• the kind of car

• the height of the ramp

• the surface of the ramp

What tool does Xavier need to measure how far the car goes each time?

• ruler

• beaker

• graduated cylinder

• stopwatch

Melika made a model to help understand why craters on the moon are different sizes. She represented the moon’s surface with a pan of flour. Melika represented objects that hit the moon with marbles. She thinks that dropping marbles from a greater height will make the crater’s diameter larger.

What should she change in her experiment to test her hypothesis?

• the weight of the marbles

• the kind of flour in the pan

• the height she drops the marbles from

• the size of the marbles

Melika made a model to help understand why craters on the moon are different sizes. She represented the moon’s surface with a pan of flour. Melika represented objects that hit the moon with marbles. She thinks that dropping marbles from a greater height will make the crater’s diameter larger.

What should she keep the same in her experiment?

• the weight of the marbles

• the kind of flour in the pan

• the height she drops the marbles from

• the size of the marbles