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Worksheets7th Science Pre NCFE
Total questions: 19
Worksheet time: 26mins
7.P.1.1 A dog runs for 2 seconds without stopping. After 1 second, the dog travels 6 meters. By the end of the next second, the dog has traveled an additional 4 meters. Which best describes the motion of the dog during the two seconds?
The dog slows down.
The dog speeds up.
The dog moves with a constant speed.
The dog changes directions.
7.P.1.2 Which best describes how forces must interact for a kite to sail up into the air?
The force of gravity must be equal to the force of the wind.
The force of gravity must be greater than the force of the wind.
The force of the wind must be greater than the force of gravity.
The force of the person flying the kite must be equal to the force of the wind.
7.P.1.3 The graph below shows the relationship between the distance an object moves and the time it travels. What can be concluded from the graph?
The object is accelerating.
The object is slowing down.
The object is not moving.
The object is moving in a straight line.
7.P.1.4 The graph below shows the distance traveled during a time interval. What is the speed of the object?
0 meters/sec
1 meters/sec
2 meters/sec
8 meters/sec
7.P.2.1 If the motion of an object increased, which type of mechanical energy was gained by the object?
chemical energy
gravitational potential energy
kinetic energy
electromagnetic energy
7.P.2.2 The diagram below shows a mass suspended on a string called a pendulum. What energy transformation occurs as the mass moves from point A to B?
Kinetic energy is converted to potential energy.
Potential energy is converted to Kinetic energy.
Chemical energy is converted to electromagnetic energy.
Gravitational energy is converted to chemical energy.
7.P.2.3 Which statement is true about the work done in lifting a box?
Energy is transferred to the box from the lifter.
Energy is transferred to the lifter from the box.
The energy of the box remains constant.
The energy of the lifter remains constant.
7.P.2.4 Simple Machine 1 is determined to have a greater mechanical advantage than Simple Machine 2 when moving an object. What can be concluded from this statement?
Simple Machine 1 can move the object further than Simple Machine 2 can.
Simple Machine 1 can lift heavier objects than can Simple Machine 2.
Simple Machine 1 uses more force to move the object than does Simple Machine 2.
Simple Machine 1 uses less force to move the object than does Simple Machine 2.
7.E.1.1 Why is the Mesosphere colder than the Troposphere?
Because the Mesosphere is closer to the ground.
Because the Mesosphere contains ozone.
Because the molecules in the Mesosphere are spaced farther apart.
Because the molecules in the Troposphere are spaced farther apart.
7.E.1.3 Which statement is false when a cold front collides with a warm front?
The front would stop, and the temperature would drop.
The warm air would move overtop of the cold air producing light rain showers.
the cold front would force the warm air mass upward producing thunderstorms.
The cold air would push the warm air further to the south.
7.E.1.4 What is most likely occurring if the land temperature near the beach is rising more rapidly than the ocean temperature?
A low pressure air mass if forming over the land while a high pressure air mass is forming over the ocean.
Differences in air pressure over land and ocean are causing a sea breeze to occur.
A land breeze is forming and wind speed and direction is changing.
The humidity is increasing because more condensation is occurring over land.
7.E.1.6 Why would the Environmental Protection Agency seek to monitor atmospheric pollution and air quality?
to make sure the air pressure remains constant over time
to make it rain in drought affected areas
to maintain the respiratory health of humans
to reduce the amount of oxygen released by the rainforests
7.L.1.1 Which characteristic do volvox and euglena share?
They both have eye spots.
They both use flagella to move.
They both have eye spots and use flagella to move.
They have neither eye spots nor flagella.
7.L.1.2 How do materials move in and out of plant cells and animals cells?
Plant cells and animal cells have cilia.
Plant cells and animal cells have a cell wall.
Plant cells and animal cells have a flagella.
Plant cells and animal cells have a cell membrane.
7.L.1.3 Which of the following is organized from simplest to most complex?
cells->organs->organ systems->tissues->the organism
cells->tissues->organs->organ systems->the organism
the organism->organ systems->organs->tissues->cells
tissues->cells->organs->organ systems->the organism
7.L.1.4 How do the lungs function within the excretory system?
the lungs exchange oxygen and carbon monoxide
the lungs absorb carbon dioxide from the air
the lungs help to release carbon dioxide while absorbing nutrients
the lungs exchange oxygen and carbon dioxide and release waste products in cells.
7.L.2.1 Which best explains why sexual reproduction produces greater variations in the offspring?
The DNA comes from two genetically different parents.
The DNA comes from one parent that is genetically identical.
The sex cells are produced by mitosis.
The sex cells undergo self fertilization
7.L.2.2 If a tall plant(TT) is crossed with a short (tt) plant, all of the offspring will be:
Tall
Short
Medium
Combination
7.L.2.3 Which of the following prenatal activities could lead to low birth weights and higher frequencies of developing asthma?
eating fast food 3 times a week
smoking
walking 2 miles a day
not taking prenatal vitamins
