Diagnostic Test Science Grade 8

A skateboarder moving at 2 m/s starts skating down a ramp. As the skateboarder heads down the ramp, he accelerates to a speed of 6 m/s in 4 seconds. What is the skateboarder’s acceleration?

• The acceleration is 1 m/s2

• The acceleration is 2 m/s2 .

• The acceleration is 1 m/s .

• The acceleration is 2 m/s .

Tags

NGSS.MS-PS2-2

Which car had a negative acceleration?

• Car A

• Car B

• Car C

• Car D

compare and contrast oxygen-16 and oxygen-17

• They have the same numbers of electrons but different numbers of neutrons.

• They have the same numbers of nucleus but different numbers

  of neutrons.

• They have the same numbers of protons but different numbers

  of electrons.

• They have the same numbers of protons but different numbers

  of neutrons.

Tags

NGSS.MS-PS1-1

When all the forces on an object are equal and opposite, & the net force is zero, that's...

• reaction forces

• terminal velocity

• balanced forces

• unbalanced forces

Tags

NGSS.MS-PS2-2

What is the number of protons that the element in this image contain?

• 7

• 14

• 14.007

• 11

Tags

NGSS.MS-PS1-1

The changing in fruit odor is:-

• Chemical change

• Physical change

Tags

NGSS.MS-PS1-2

A gas

• has a definite shape but no definite volume
• has a definite volume but no definite shape
• has fast-moving particles

Tags

NGSS.MS-PS3-5

Which of these is a qualitative observation?

• The boy is 5 feet tall.
• There are six birds in the tree.
• The birds are tiny.
• There are more blue birds than black birds. 

What are the steps in the Scientific Method?

• Ask a Question, Make a Hypothesis, Do Background research, Conduct an Experiment, Analyze your data, Report your results. 
• Ask a Question, Make a Hypothesis, Analyze your data, Do Background research,  Conduct an Experiment,  Report your results. 
• Ask a Question, Do Background research, Make a Hypothesis, Conduct an Experiment, Analyze your data, Report your results. 
• Ask a Question, Do Background research, Conduct an Experiment, Make a Hypothesis, Analyze your data, Report your results. 

The horizontal (side to side) rows in the Periodic Table are called

• groups

• families

• periods

• atomic numbers