Nature of Science
Forces
Motion
Rotation vs Revolution
Seasons
100
The part of a controlled experiment that you change or test at the BEGINNING of the experiment
What is independent/test variable?
100
The strength of the gravitational force between two objects depends on what two factors?
the distance between the objects and the mass of the objects
100
Which type of force(s) will cause a change in an object's motion?
unbalanced forces
100
the spinning of an object around an axis
What is rotation?
100
day when Earth’s axis is not leaning toward or away from the Sun. Means, "Equal Nights"
What is equinox?
200
The part of a controlled experiment that you measure at the END of the experiment
What is dependent/outcome variable?
200
Which is a force that resists motion between two surfaces that are in contact?
What is friction?
200
Newton's first law states that an object in motion ...
…will stay in motion until acted upon by an unbalanced force.
200
an imaginary line around which an object rotates
What is Axis?
200
day when Earth’s rotation axis is the most toward or away from the Sun. Means "To stand still"
What is solstice?
300
Science is…..
What is The process of understanding the world.
300
Two teams are playing tug of war. With both teams pulling on opposite ends of the rope, neither team can pull the other toward them. This is an example of what kind of forces?
What is balanced forces?
300
Newton's third law of motion states that __________.
when a force is applied on an object, there is an equal force applied by the object in the opposite direction
300
the movement of an object around another object. One year for Earth
What is revolution?
300
During which month is Earth closest to the Sun?
January
400
A __________ describes the behavior of something in nature based upon observations.
What is inference?
400
Name two contact and two noncontact forces.
Contact: friction and applied Noncontact: Magnetism and gravity
400
According the Newton’s second law, the more mass an object has, the _______________ force it takes to get it into motion.
more
400
path an object follows as it moves around another object.
What is orbit?
400
In which season does the tilt of Earth allow an area to receive the most light?
What is summer?
500
While conducting research, Suzanne made observations, formed a hypothesis, designed an experiment, and collected data. She repeated her experiment several times. Each time, the results of her experiment did not support her hypothesis. What should she do next? (8.N.1.1,O5)
revise her hypothesis
500
Explain the difference between mass and weight. How would your mass and weight on the Earth compare to the moon?
The mass of an object is the amount of matter in it, but the weight is the gravitation force on an object. The mass will stay the same on the moon, but the weight will change.
500
If you repeated the rocket experiment on the moon, would the rocket go higher, the same height, or not as high? Why?
The rocket would go higher because there isn’t as much gravitational force on the moon to pull it down.
500
What causes the Sun’s apparent motion across the sky each day?
What is rotation of the Earth?
500
At JCMHS, why is it colder in winter than summer even though the Earth is closest to the sun in January? Give two reasons.
The Earth’s axis is tilted 23 degrees. Because of this, the Earth gets unequal amount of sunlight. During the winter in the Northern Hemisphere, the Earth is tilted away from the sun. This causes the Northern hemisphere to get less hours of daylight and less direct sun.
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