Force and Motion
Four solid balls, each with a different mass, are moving at the same speed. Which ball would require the most force to stop its motion?
A What is a ball with a mass of 5 kg?
B What is a ball with a mass of 10 kg?
C What is a ball with a mass of 15 kg?
D What is a ball with a mass of 20 kg?
D What is a ball with a mass of 20 kg?
In which way are evaporation and condensation similar?
A What is both cause decreases in air temperature?
B. What is both cause increases in air temperature?
C. What is both are caused by the warming of the atmosphere?
D. What is both are caused by changes in heat energy?
D. What is both are caused by changes in heat energy?
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 this area?
a. stormy
b. sunny
c. snowy
d. hot
b. sunny
A pot is heated on a stove. Which process causes the metal handle of the pot to also become hot?
a. What is combustion?
b. What is convection?
c. What is radiation?
d. What is conduction?
d. What is conduction?
Which has the greatest effect on wind speed?
a. What is precipitation?
b. What is cloud cover?
c. What is wind direction?
d. What is air pressure?
A girl walked for 30 minutes. She noticed that she traveled farther in the first 15 minutes of her walk than in the second 15 minutes. What can seh conclude about her walk?
A What is she walked over many hills?
B What is her average speed was faster during the first half of her walk?
C What is she walked in two different directions? D What is she was walking at a constant speed?
B What is her average speed was faster during the first half of her walk?
Which is most responsible for the uneven heating of the air in the atmosphere?
A. What is radiation?
B. What is convection?
C. What is conduction?
D. What is condensation?
B. What is convection?
Which best describes a characteristic of the jet stream?
a. It forms a boundary between a cold air mass and a warm air mass
b. It creates the high winds around the eye of a hurricane.
c. it forces the hot air along the equator to rise to areas in North America.
d. It causes high pressure air masses to rotate clockwise.
a. It forms a boundary between a cold air mass and a warm air mass
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?
a. The mass of the balloon increases because the size of the balloon has increased.
b. The mass of the balloon increases because the temperature of the balloon has increased.
c. The mass of the balloon stays the same because the gas inside the balloon still has the same mass after it warms up.
d. The mass of the balloon stays the same because warming decreases the mass enough to cancel out the effect of increasing the size.
c. The mass of the balloon stays the same because the gas inside the balloon still has the same mass after it warms up.
Which is an example of a single-celled organism?
a. What is an amoeba?
b. What is an insect?
c. What is a fish?
d. What is a worm?
a. What is an amoeba?
Which best describes the speed of a ball as it is thrown straight up into the air and comes back down?
a. The ball goes up at a constant speed, stops, then comes down at a constant speed.
b. The ball goes up at a constant speed, stops, and increases speed as it comes down.
c. The ball goes slower and slower as it goes up, stops, then goes faster and faster as it comes down.
d. The ball goes slower and slowers as it goes up, stops, and then comes down at a constant speed.
c. The ball goes slower and slower as it goes up, stops, then goes faster and faster as it comes down.
Which best describes why winds at the beach change direction between day and night?
a. What is because the temperatures over land and over water change?
b. What is because warm air over land sinks and stays in place over land?
c. What is because cool air rises and is replaced by warm air from the ocean
d. because cool air sinks and stays in place over land
a. What is because the temperatures over land and over water change?
Which best describes why winds at the beach change direction between day and night?
a because the temperatures over land and over water change
b. because warm air over land sinks and stays in place over land
c. because cool air rises and is replaced by warm air from the ocean
d. because cool air sinks and stays in place over land
a because the temperatures over land and over water change
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?
a. The heat from the fire travels through the ground and heats the ground around the people.
b. The heat from the fire is conducted through air molecules to the people.
c. The heat from the fire rises in the air and then settles around the people.
d. The heat from the fire radiates from the fire to the people.
d. The heat from the fire radiates from the fire to the people.
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?
a. What is precipitation?
b. What is transpiration?
c. What is evaporation?
d. What is condensation?
c. What is evaporation?
A pencil falls off of a desk. What moves the pencil toward the floor?
a. mass
b. friction
c. gravity
d. speed
a. What is warm temperatures?
b. What is cloudy conditions?
c. What is clear conditions?
d. What is cool temperatures?
b. What is cloudy conditions?
Which will most likely result from a low-pressure weather system?
a warm temperatures
b cloudy conditions
c clear conditions
d cool temperatures
b cloudy conditions
Bill stands in a swimming pool and notices that water around his feet is a lot cooler than the water near the surface. Which process causes this difference in temperature?
a. What is convection?
b. What is evaporation?
c. What is radiation?
d. What is conduction?
a. What is convection?
Andy lives in the southern hemisphere. What season does he most likely experience in August?
a. spring
b. summer
c. winter
d. autumn
c. winter
A child rides a wagon down a hill. Eventually, the wagon comes to a stop. Which is most responsible for causing the wagon to stop?
a. gravity acting on the wagon
b. friction acting on the wagon
c. the mass of the wagon
d. the mass of the child
b. friction acting on the wagon
Which is the best explanation for how air masses move across the United States?
a. The prevailing westerlies move air masses from west to east across the US but may be deflected by the jet stream
b. The trade winds move air masses from west to east across the US
c. The jet stream moves air masses from the Pacific Ocean across the US
d. The warm air of the Gulf Stream causes air masses to move from the Atlantic Ocean to the Pacific Ocean.
c. The jet stream moves air masses from the Pacific Ocean across the US
Which is the best explanation for how air masses move across the United States?
a The prevailing westerlies move air masses from west to east across the United States but may be deflected by the jet stream
b The trade winds move air masses from west to east across the United States
c The jet stream moves air masses from the Pacific Ocean across the United States.
d The warm air of the Gulf Stream causes air masses to move from the Atllantic Ocean to the Pacific Ocean.
a. The prevailing westerlies move air masses from west to east across the United States but may be deflected by the jet stream
The transfer of thermal energy by the movement of liquids or gases is called
a. radiation
b. convection
c. insulation
d. conduction
b. convection
Which is an example of a different substance being formed?
A. What is glass breaking?
B. What is metal melting?
C. What is water freezing?
D. What is burning wood?
What is burning wood?