2024 Biology Semester 1 Final Exam

In an experiment to find out how the temperature affects the bounce height of a ball, the dependent variable is ...

• temperature
• bounce height
• the thermometer
• the ruler

The one variable in an experiment that is purposely changed and tested by the scientist is the________________.

• dependent variable

• independent variable

• data

• control group

Research Question: Does the type of gasoline put in a car affect how fast the car can drive.

What is the independent variable?

• Type of gasoline

• which car the gas is put into

• how fast the car can drive

• how much gas is put into the car

What is the independent variable?

• cost of mowing
• Moe's Mowing Service
• $18
• Mowing Time

How many independent variables should you have in an experiment?

• two

• as many as possible

• four

• one

An experiment is performed on plants to see how different liquids affect plant growth. Each plant in the experiment is given a different liquid: water, apple juice, or milk. What should be kept constant? 

• type of plant, flower pot,  soil, and amount of sunlight
• water, apple juice, milk
• only the amount of sunlight
• type of plant only

During which month did Sam have a weight of 73 Kg?

• January

• February

• May

• March

What is the dependent variable?

• Grade
• Number of Students

What is the relationship between mowing time and the total cost for mowing?

• Positive

• Negative

• None

Air is matter. We found that the weight of the ball increases by .5lbs each time we pumped more air into it. This shows that air has weight, one of the characteristics of matter. Which sentence is the Claim?

• Air is matter.

• We found that the weight of the ball increases by .5lbs each time we pumped more air into it.

• This shows that air has weight, one of the characteristics of matter.