TEST Sci Method, Matter, Data

A testable prediction about a scientific investigation is a(n)

• Question
• Observation
• Hypothesis
• Experiment

This part of the experiment serves as a basis of comparison:

• control group

• Independent variable

• dependent variable

• data

A student wants to test the effects of type of exercise on heart rate. What is the dependent variable?

• time of day exercise occurs

• amount of exercise

• heart rate

• type of exercise

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. Each plant has the same amount of soil, sunlight, and listens to the same music. In this investigation, the constants were is ...

• type of plant

• the amount of soil and sunlight

• the amount of shade

• the type of liquid

The independent variable is the ONE thing you _____.

• change on purpose
• control or keep constant
• measure
• think will be the answer

The variable that is being measured or observed is called the _______________. Hint: this is the variable that is the result or effect

• independent variable

• dependent variable

• control variable

• hypothesis

How many independent variables should you have in an experiment?

• two

• as many as possible

• four

• one

If you increase the amount of spinach you eat, then you will increase the iron in your blood. 

What's the dependent variable in the statement above?

• increase the amount of iron in your blood
• the amount of spinach you eat

• how long it took to eat the spinach

• how strong you felt after you ate the spinach

When experimenting with the growth of a plant, a scientist uses three (of the same type of) plants, two different fertilizers, equal light, and equal water. What type of variable is the fertilizer?

• Dependent
• Independent
• Control
• Compound

Ammonia has chemical formula NH₃. This is a:

• Mixture

• Element

• Compound

• Particle