NC Science Exam

What can cause a moving object to increase its speed in a forward direction? 

• a force pushing on the object from the opposite direction 
• a force that continually acts on the object in the direction the object is moving 
• an increase in the mass of the object 
• a decrease in the mass of the object 

Tags

NGSS.MS-PS2-2

A student uses a rubber band to launch the four objects shown in the table.
Object Mass
 paper clip 0.5 gram
piece of paper 1 gram
eraser 2 grams
rubber ball 10 grams
If the student pulls the rubber band back the same amount each time, which object will most likely move the fastest when launched?

• paper clip 
• piece of paper 
• eraser
• rubber ball 

Tags

NGSS.MS-PS2-2

NGSS.MS-PS3-1

After a rain, a puddle of water remains on a sidewalk. After a day of sunshine, the puddle is gone. Which process is most responsible for the disappearance of the puddle?

• precipitation 
• transpiration
• evaporation
• condensation 

Tags

NGSS.MS-ESS2-4

NGSS.MS-PS1-4

If 10 grams of water are added to 5 grams of salt, how much salt water will be made? 

• 2 grams
• 5 grams 
• 10 grams 
• 15 grams

A student notices that an inflated balloon gets larger when it is warmed by a lamp. Which best describes the mass of the balloon as a result of this change? 

• The mass of the balloon increases because the size of the balloon has increased. 
• The mass of the balloon increases because the temperature of the balloon has increased.  
• The mass of the balloon stays the same because the gas inside the balloon still has the same mass after it warms up. 
• The mass of the balloon stays the same because warming decreases the mass enough to cancel out the effect of increasing the size.  

Tags

NGSS.MS-PS1-4

People sitting around a campfire are able to feel the heat from the fire. How are the people able to feel the heat from the fire without touching the fire? 

• The heat from the fire travels through the ground and heats the ground around the people.  
• The heat from the fire is conducted through air molecules to the people. 
• The heat from the fire rises in the air and then settles around the people. 
• The heat from the fire radiates from the fire to the people. 

Tags

NGSS.MS-PS4-2

Bill stands in a swimming pool and notices that the water around his feet is a lot cooler than the water near the surface. Which process causes this difference in temperature? 

• convection 
• evaporation 
• radiation 
• conduction 

Andy lives in the southern hemisphere. What season does he most likely experience in August?

• spring 
• summer 
• winter 
• autumn 

Tags

NGSS.MS-ESS1-1

On a cold, cloudy day, the local weather forecaster predicts that a high-pressure system will be moving into the area in the next 24 hours. Which weather conditions will this system most likely bring to the area? 

• stormy 
• sunny 
• snowy 
• hot 

Tags

NGSS.MS-ESS2-5

Which best describes a characteristic of the jet stream?

• It forms a boundary between a cold air mass and a warm air mass. 
• It creates the high winds around the eye of a hurricane.  
• It forces the hot air along the equator to rise to areas in North America. 
• It causes high pressure air masses to rotate clockwise.

Tags

NGSS.MS-ESS2-5

NGSS.MS-ESS2-6