Scientific Investigation

Based on information in the diagram, about how tall is the tree?

• 10 feet
• 20 feet
• 40 feet
• 80 feet

If 5 milliliters of vinegar are added to the water in the cylinder, what will be the total volume of the liquid?

• 30 milliliters
• 27 milliliters
• 37 milliliters
• 35 milliliters

Which of these can be observed in this picture?

• The moon is circular
• The moon spins
• The moon is solid rock
• The moon has little air

According to the picture, which of these is an inference rather than an observation?

• This animal has hair
• This animal has a tail
• This animal is arching its back
• This animal is frightened

Using the picture and classification key, what is this animal?

• Swordfish
• Hammerhead shark
• Leopard shark
• Nurse shark

This variable is the one thing that changed on purpose...

• Dependent Variable

• Control

• Independent Variable

What is the DEPENDENT variable (effect) in this experiment?

"Does eating breakfast improve test scores?"

• eating breakfast or not

• the grade you got on the test

• what time you get up in the morning

• how tasty the breakfast is

Sadie is testing how the age of a seed affects how fast plants grow. Look at the picture to see if you can figure out what makes her experiment unfair. Mark all that apply.

• She used different types of seeds/plants.

• The plants are in different pots.

• She did not plant very many plants.

• Seed age might not make a difference.

A hypothesis is never wrong.

• True

• False

Choose the correctly written hypothesis for "What is the effect of putting Pam Cooking Spray on the bottom of a sled?"

• I think the sled will slide faster.

• If I put Pam Cooking Spray on the bottom of my sled, then I will win the race."

• If I put Pam Cooking Spray on the bottom of my sled, then I will slide faster.