Practice: Scientific Method & The Metric System

The ______________________ variable is the factor in the experiment that is being tested.

• dependent

• controlled

• independent

• scientific

kilo is the prefix with a value of

• 10

• 100

• 1000

• 1

What is the basic unit of length?

• foot

• gram

• meter

• yards

Imagine you're a scientist conducting an experiment. How many independent variables should your 'valid' experiment have?

• Just one!

• Two, for double the fun!

• Three, because the more the merrier!

• It doesn't matter, let's go wild!

Imagine you're a scientist conducting a thrilling experiment to uncover the mystery of how the amount of salt in a body of water influences the number of plants that can survive in it. In this exciting scenario, what would you consider as the dependent variable?

• the water itself

• the temperature of the water

• the number of plants that can bravely live in the water

• the amount of salt in the water

Imagine you're a scientist conducting an experiment. There's a group that you don't give any experimental treatment to, and you use it as a standard for comparison. What do you call this group?

• Dependent Variable

• Constant

• Independent Variable

• Control

Imagine you're a tiny ant and you have to carry a grain of sugar. Which of these prefixes would represent the smallest amount of sugar you'd have to carry?

• milli

• deci

• deka

• kilo

A rule is 240 cm long. How many meters is it?

• 2400

• 24

• 2.4

• 0.24

• 24000

Imagine you're a tiny ant and you come across a sugar cube weighing 20 g and a piece of apple weighing 2 kg. Which one is heavier?

• The sugar cube is heavier

• The apple is heavier

• They weigh the same

Imagine you have a giant 6 kg watermelon! How many grams would that be?

• Is it just 6 grams?

• Could it be 6000 grams?

• Or maybe 600 grams?

• Or is it as tiny as .006 grams?