Science Review

Bruce thinks that a rough surface has more friction than a smooth surface. He tests this by rolling spheres across surfaces, measuring the distance they travel after being pushed by a certain amount of force. What is the Independent Variable?

• Different types of spheres
• Different amounts of force
• Different textured surfaces
• Different angle of the ramp

Tags

NGSS.MS-PS2-2

Which of these statements correctly describes the forces acting on this statue? 

• The downward force of gravity affects the statue more than the table. 
• The downward force of gravity on the statue is balanced by the upward force of the table on the statue. 
• Gravity pushes down on the statue with a force greater than the upward force from the table. 
• Gravity pulls the table down and pushes the statue up. 

Tags

NGSS.MS-PS2-4

In plants, opening in the leaves called stomata exchange gases with the enviroment. An organ system with a similar function in many animals is the... 

• Nervous
• Cardiovascular
• Respiratory
• Integumentary

Which best describes what is happening to the light?

• Diffracted
• Diffused
• Reflected
• Refracted

Tags

NGSS.MS-PS4-2

Which will have the greatest acceleration if acted upon by a net force of 150 N?

• 2 kg object
• 11 kg object
• 45 kg object
• 100 kg object

Tags

NGSS.MS-PS2-2

Fish are able to survive in aquatic habitats due to

• Their ability to swim to the surface to breath
• Special structures adapted to obtain dissolved oxygen
• Their ability to change colors
• Special structures adapted to allow quick movements

Tags

NGSS.MS-LS4-4

Terell placed two objects on s balance scale to measure their mass... Object 1 had a greater mass than object 2.  What conclusion can he make?

• There is less material in object 1 than object 2
• There is more material in object 1 than object 2
• They both have the same amount of material
• There can be no conclusion

Which is soluble in water?

• Metal Shavings
• Sand
• Sugar
• Chalk Powder

Tags

NGSS.MS-PS1-2

Sound does not travel through space because sound waves

• can only travel through gases like air
• expand out in circles rather than straight lines
• cannot move through places that are too dark
• must move through a substance to transfer energy

Tags

NGSS.MS-PS4-2

In a tug of war game, balanced forces are best represented when both teams cause the flag to 

• fall to the ground
• stay in the middle
• move slowly in one direction
• be pulled quickly in one direction

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-1