ET Hypothesis 8/14/24

According to the diagram, which question is being tested?

• How does color of light affect plant growth?

• How does the amount of fertilizer added to plants affect growth?

• How will different amounts of water affect plant growth?

• How does the type of soil affect plant growth?

Tyler is pulling this block of wood up a ramp. What would be the dependent (or responding) variable that he is measuring?

• the weight of the wood block that is being pulled up the ramp by the spring scale in TYlers hand

• the number of books stacked under the ramp that changes the angle and the height it travels

• the amount of force needed to pull the wood block up the ramp that is measured by the spring scale

• the friction of the wood against the ramp pushing against the wood block

A students was doing an experiment using the scientific method. Every three days the student plans to count the green leaves. Which would be a good hypothesis for this experiment?

• If plants are placed in direct sunlight, then they will grow more green leaves.

• If plants are places in bright light, then they will grow more green leaves than in dim light.

• If plants are place in clay pots, then they will grow more green leaves than plastic pots.

• If plants are in warmer temperatures, then they will grow more green leaves.

Which of the following hypotheses is written correctly?

• If I freeze a tennis ball, then it will not bounce as high.

• If a tennis ball is frozen, it won't bounce as high as one that is not frozen.

• Frozen tennis balls will not bounce as high.

• If I heat up a tennis ball it will bounce high

A scientist hypothesizes the the temperature at which an alligator's egg is incubated will determine whether the alligator will be male or female. The independent variable is

• the male alligators

• the gender of the alligator

• the temperature

• the incubator