Semester Test Review 1

What is an observation?

• A scientific statement based on ideas
• Using your senses to notice what is going on around you
• The question that you want an answer to.
• To be unaware of your surroundings

Identify the independent variable in the following experiment: If I give the same type of plants different liquids (pop, juice, water, monster), will they still grow?

• The same plants; the same amount of liquid
• Plants given water
• How much the plants grow
• Different liquids

"The potato weighs 174.95 g." is an example of a(n)

• qualitative observation
• inference
• quantitative observation
• average

Which type of variable is the data you measured during an experiment.

• controlled variable
• independent variable
• dependent variable

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

• amount of exercise
• heart rate
• type of exercise
• time of day exercise occurs

What needs to be constant in the following experiment: Does the amount of coffee students drink increase their test scores?

• test scores
• same test
• test scores without drinking coffee
• amount of coffee

What type of observation is this? The kid is wearing blue and red.

• qualitative observation
• quantitative observation

What type of variable must remain the same for the entire experiment?

• independent variable
• controlled variable
• dependent variable

In an experiment you change or manipulate this type of variable.

• dependent variable
• controlled variable
• independent vaiable

What type of observation is this? There are 7 kids playing basketball.

• qualitiative observation
• quantitative observation