Science Investigation Review

Matter is...

• a substance made up of only one kind of element
• anything that has mass and takes up space

Which of the following determines if an object sinks or floats?

• density
• mass
• weight
• volume

Which tool can be used to measure the mass of an object?

• balance
• ruler
• graduated volume
• themometer

In an experiment, the one variable that is changed by the scientist is called the ______.

• independent variable
• dependent variable
• random variable
• controlled variable

In an experiment, the factor that we observe and/or measure is called the ____.

• independent variable
• dependent variable
• random variable
• controlled variable

A testable, possible explanation for a scientific question is called a(n) _____.

• theory
• random guess
• law
• hypothesis

A scientist studies how many days it takes people to get sick when eating different candies.  What is the independent variable?

• eating
• days until sick
• the scientist
• candies

A scientist studies how many days it takes people to get sick when eating different candies.  What is the dependent variable?

• eating
• days until sick
• the scientist
• candies

Which tool is used to measure the volume of a liquid?

• balance

• ruler

• thermometer

• graduated cylinder

Which tool should a student use to compare the mass of two small rocks?

• balance

• hand lens

• ruler

• measuring cup