frank science

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 independent variable is ...

• The type of plant
• The amount of sunlight
• The type of music
• The type of liquid

If you were testing the time it took for objects of different sizes to reach the ground after being dropped from 30 feet in the air, which of these would be the DEPENDENT VARIABLE?

• The time it takes for each object to hit the ground.

• The size of each object.

• The type of object you use.

• The height you drop the object from

Frank has a paper clip. It has a mass of 9g and a volume of 3cm³. What is its density?

• 3 g/cm³
• 1/3 g/cm³
• 27 g/cm³
• 39 g/cm³

How much water has been displaced in the image shown?

• 80 mL
• 100 mL
• 20 mL
• 60 mL

The tool used to measure the mass of a substance or object is a ______________.

• balance
• graduated cylinder
• ruler
• thermometer

What is the formula for density?

• density = mass x volume
• density = mass / volume
• density = mass + volume
• density = mass - volume

Which numbers are added to give the mass number of an atom?

• number of protons + number of neutrons

• number of electrons + number of neutrons

• number of electrons + number of protons

• number of electrons + number of protons + number of neutrons

Protons have this type of charge

• positive
• negative
• neutral - no charge

The atomic number of an atom is the number of 

• protons in its electron cloud
• protons in its nucleus
• neutrons in its nucleus
• electrons and neutrons in the nucleus

An atom with atomic number 6 would have how many protons?

• 6
• 12
• 3
• cannot be determined