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Worksheets8th Grade - Homework Week 27
Total questions: 15
Worksheet time: 4hrs 45mins
Different relative positions of the sun, the moon, and Earth have different effects on Earth’s ocean. Which model shows the positions of the sun, the moon, and Earth that have the greatest effect on ocean tides?
What are the two main factors that create the tides on Earth?
Gravitational forces and rotation of Earth on its axis.
The sun and moon's gravitational pull on the Earth's oceans.
Distance from the Sun and distance from the Moon.
Gravitational forces and rotations of Moon on its axis.
Tides are the result of forces exerted on Earth’s oceans mostly by which celestial body?
The Sun
Jupiter
The Moon
Venus
How often do neap tides occur and when do they occur?
1x a month, full moon & new moon
2x’s a month, new moon & full moon
1x a month, 1st quarter & 3rd quarter
2x’s a month, 1st quarter & 3rd quarter
How often do spring tides occur and when do they occur?
1x a month, full moon & new moon
2x’s a month, new moon & full moon
1x a month, 1st quarter & 3rd quarter
2x’s a month, 1st quarter & 3rd quarter
Which of the following forces creates the tides on Earth?
Magnetic
Electrostatic
Gravitational
Frictional
Which of the following would have the greatest effect on the size of the tides on Earth?
Slowing the rate of rotation of the Moon.
Increasing the rate of revolution of Earth.
Decreasing the distance between the Moon and Earth
. Increasing the distance between the Moon and the Sun.
Which statement regarding the relationship of the Sun, Moon, and ocean tides is correct?
Ocean tides are highest when there is a full moon because the Sun, Moon, and Earth are in alignment.
Ocean tides are highest when there is a quarter moon because the Sun, Moon, and Earth are at 90oangles.
Ocean tides are lowest when there is a new moon because the Sun, Moon, and Earth are in alignment.
Ocean tides are at their lowest when there is a full moon because the Sun, Earth, and Moon are in alignment.
Look at the diagram provided. How many points on Earth, as indicated by the arrows, will be experiencing high tides?
1
2
3
4
A diagram of the Moon and Earth systems is provided. At which points in the diagram would the lowest tides be expected?
W & Y
W & X
Y & Z
Z & X
Which of the following components of the universe is best described as a system of stars, gases, and dust held together by gravity?
A nebula
A planet
A meteor
A galaxy
The stars and all the other matter in a galaxy are held together by which of the following?
Dark matter
Inertia
Gravity
Magnetism
. Which of the following components of the universe is best described as an interstellar cloud of dust and gases where stars can form?
A nebula
A planet
A meteor
A galaxy
Stars are made mostly of which two elements?
Hydrogen and helium
Mercury and strontium
Iron and potassium
Krypton and bismuth
The Hertzsprung-Russell diagram, for classifying stars based on the relationship between their brightness and their temperature and color, is provided. In comparison to the Sun, Betelgeuse-
is smaller in diameter
is brighter and hotter
is less bright but hotter
is cooler and brighter
