8th Grade Review 2018

A class of students is tasked with doing 5 different activities, and they only have 25 minutes to complete each.  What is the Independent Variable in this activity? 

• The time to complete each activity
• The activities themselves
• The outcome of each activity

A class of students is tasked with doing 5 different activities, and they only have 25 minutes to complete each.  What is the Constant Variable in this activity? 

• The time to complete each activity
• The activities themselves
• The outcome of each activity

Below is a list of descriptions for the variables in an experiment.  All of the following below describe the Independent Variable except...

• The variable changed by the scientist
• The variable that is being measured and recorded during the experiment
• The variable typically changed at the beginning of the experiment
• The variable that is the main idea or central purpose of the experiment

The first law of motion states that all objects in motion want to remain in motion.  Yet when a ball is thrown up in the air, it eventually stops and then falls back down.  Why?

• Because the force of throwing the ball up causes it to also fall back down
• Because the trajectory of objects in the air always causes them to fall back down
• Because of the external forces of Earth acting upon the ball
• Because the pressure acting upon objects always changes with altitude

The official temperature scale of the metric system, designed around water, with 0^o and 100^o being the freezing and boiling point.

• Celsius
• Fahrenheit
• Kelvin

Which combination would most likely create the strongest Electromagnet?

• BBA
• CCA
• BCA
• BCC

The shorter the Wavelength of any wave (sound or light) the greater the what?

• Amplitude
• Frequency
• Speed
• Force

The shaded in section on the Periodic Table refers to what?

• The Periods
• The Groups (Families)
• The Atomic Numbers
• The Atomic Mass'

The shaded in section on the Periodic Table refers to the what?

• The Groups (Families)
• The Periods
• The Atomic Numbers
• The Atomic Mass'

Is the chemical reaction shown in the image balanced?

• Yes it is balanced!
• No it aint balanced!