What causes a moving object to increase its speed in a forward direction?
a force pushing the object in the direction it is traveling
100
How are evaporation and condensation similar?
Both are caused by changes in heat energy.
100
What process is responsible for the uneven heating of the earth?
convection
100
What will most likely result from a low-pressure weather system?
cloudy conditions
100
What is the function of the circulatory system?
to move blood throughout the body
200
A pencil falls off the table and hits the floor. What caused the pencil to hit the floor?
gravity
200
After a heavy rain, there is a puddle on the sidewalk. The next day, the puddle is gone. What most likely happened to the puddle?
It evaporated.
200
A pot is heated on a stove. What process causes the metal handle to get hot?
conduction
200
What best describes why winds at the beach change direction between day and night?
because the temperature over land and water change from day to night
200
What two body system work together to help people walk?
muscular and skeletal
300
A girl walks for 30 minutes. She notices that she traveled farther in the first 15 minutes of her walk than in the lat 15 minutes of her walk. What does this mean?
She was walking faster in the first 15 minutes.
300
What must occur in order for clouds to form?
water vapor must evaporate
300
A group of people sitting around a campfire are getting hot from the fire. Why are people getting hot if they are not touching the fire?
Heat from the fire is radiating onto them.
300
From which direction do air masses move across the United States?
west to east
300
How can a problem with the skeletal system affect the muscular system?
If you break your leg bone then your leg muscles might get weaker since you cannot move them as much. (other answers are acceptable)
400
Carl is getting pushed in a wagon across a grassy field. When his friend stops pushing, he slowly comes to a stop. What caused his wagon stop?
friction
400
What are runoff and collection?
Runoff is the water that flows down hills after the rain and collection is pools of water like rivers, lakes, and puddles.
400
Bill stands in a swimming pool and notices the water near his feet is a lot cooler than the water at the surface of the pool. What causes this?
covection
400
What has the greatest effect on wind speed?
air pressure
400
Which body system processes food into unable energy?
the digestive system
500
If a paperclip and a bowling ball were dropped at the same time, which would hit the ground first and why?
They would hit the ground at the same time because the force of gravity is the same on both items.
500
Which part of the water cycle is most similar to evaporation?
transpiration
500
Heat always moves from _________ to ________ objects until both objects are the same temperature.
warmer to colder
500
On a cold, cloudy day, the weather forecaster predicts a high-pressure system will be moving into the area. What weather conditions will this system most likely bring?