Physical Science First Semester Final Exam

What is the part of an experiment that serves as a standard for comparison?

• Control Group

• Constant

• Hypothesis

• Variable

Tags

NGSS.MS-PS2-2

A testable prediction that predicts a cause and effect relationship between variables is a(n).

• analysis

• hypothesis

• observation

• inference

A factor in an experiment being manipulated is the ____________ while the ________________changes in response to it.

(a)   (b)  

• constant
• control group
• independent variable
• dependent variable

Tags

NGSS.MS-PS2-2

Which of these would be the BEST way to show change over time?

• Bar graph

• Circle Graph

• Line Graph

• Scatter Graph

What is 78,900,000,000 expressed in scientific notation?

• 789 x 10^9

• 7.89 x 10^10

• 7.89 x 10^9

• 7.89 x 10^11

The speed of light is approximately 3.0 x 10^8 m/s. How would this be written in standard notation? (leave out the commas)

Tags

NGSS.HS-PS4-1

Jenny and Angie are studying how rap music affects rodent's time through a maze. One group of 10 rats was made to listen to rap music, while the other listened to classical music. ​ (a)   is the independent variable.​ (b)   is the dependent variable.

​ (c)   were all constants.

• The music
• The rat's time
• Maze, volume of music, and number of rats
• The maze
• The type of rat
• Type of maze and type of music

The horses on a carousel or merry-go-round are accelerating because ____.

• the speed of the horses is constantly increasing

• the speed of the horses is constantly decreasing

• the direction of the horses' motion is constantly changing

• the travel time is different for every ride

When a car traveling at 30 m/s hits the gas pedal, it speeds up to 65 m/s in 3.5 sec. What is the car's acceleration during that time?

• 5 m/s^2

• 10 m/s^2

• 15 m/s^2

• 20 m/s^2

Tags

NGSS.HS-PS2-1

Which statement about the movement of an object with zero acceleration could be true?

• the object is speeding up

• the object is slowing down

• the object is moving at a constant speed

• the object is changing direction

Tags

NGSS.HS-PS2-1