The Unfair Game

1

1

When masses increase, the force of gravity __________.

increases

+6 points

2

What two things influence an object's gravity? 

Mass and distance

-4 points

3

As the distance between two objects increases, the gravitational pull between them __________. 

decreases 

-2 points

4

Define the law of universal gravitation.

Every object in the universe attracts every other object, depending on their masses and distances from one another.

+1 point

5

Rank the gravitation pull of the following three objects from weakest to strongest: the earth, the sun, the moon

The moon, the earth, the sun

+3 points

2

1

Fill in the blanks of Newton's first law:

An object at ______ will stay at _______, and an object in __________ will stay in _________.

Rest, rest, motion, motion

- 5 points

2

True or false, the moon's gravity influences processes on the Earth.

True

-7 points

3

What is inertia?

Inertia is what keeps objects in motion or at rest.

+6 points

4

What was the GRACE mission? 

A satellite launched to map out Earth's gravitational field.

- 6 points

5

Is the earth's field of gravity spread out evenly?

No

+ 2 points

3

1

In your group, demonstrate the difference between a revolution and a rotation.

Revolution = moving around another object

Rotation = spinning on an axis

+ 5 points

2

What is the main thing that causes seasons on the earth?

It's tilt on an axis

- 2 points

3

Where on the earth does the sun shine most directly?

The equator

- 7 points

4

Where on the earth does the sun shine the least directly?

The North and South poles

-1 point

5

Define equinox

The two days of the year when day and night are almost the same length

+ 7 points

4

1

Define solstice

The two days of the year when day and night are almost the same length

-10 points

2

What two seasons have an equinox?

Spring and fall

+ 9 points

3

What two seasons have a solstice?

Summer and winter

+ 4 points

4

What causes tides?

The moon's gravitational pull on the earth

+8 points

5

When does a spring tide occur?

When the sun, earth, and moon are all in a straight line.

+5

5

1

Draw a diagram of a spring tide. (Include the sun, the earth, the moon, and how the water on the earth is stretched)

Straight line, with exaggerated tides

+4

2

When does a neap tide occur?

When the sun, the earth, and the moon are at a 90 degree angle.

-2

3

Draw a diagram of a neap tide. (Include the sun, the earth, the moon, and how the water on the earth is stretched)

Sun, earth, and moon are at 90 degrees, less exaggerated tides

+5 points

4

If a line is drawn connecting the two high tides on the earth, and another line is drawn connecting the two low tides on the earth, those lines would be _________.

Perpendicular

+7

5

What moon phase occurs at the same time as a spring tide?

New moon, or full moon

+1