# What does the model tell you about the relative size of the Moon and the earth?

## What does the model tell you about the relative size of the Moon and the earth?

The diameter of the Moon is about 3500 km which means that the face of the Moon is roughly the same width as Australia. The Earth has a diameter of approximately 12 800 km. The Moon is a little less than a quarter the diameter and is approximately one-fiftieth the volume of the Earth.

READ ALSO:   Is it OK to have two daughters?

### How long does it take for the Moon to complete one revolution around the Earth?

27 days, 7 hours and 43 minutes
This movement is from the Moon’s orbit, which takes 27 days, 7 hours and 43 minutes to go full circle. It causes the Moon to move 12–13 degrees east every day. This shift means Earth has to rotate a little longer to bring the Moon into view, which is why moonrise is about 50 minutes later each day.

#### What two objects represent a scale comparison of the Earth and moon?

Building on what students learned with the balloon, ask them to identify a ball (either from the selection gathered for the lesson or any they can think of) that would represent the correct size of the Moon compared with the basketball Earth. Answers will vary, but a baseball or tennis ball is an accurate size for a …

What two factors cause the Moon illusion?

READ ALSO:   What do B vitamins help with?

In general, the proposed explanations have to do with a couple of key elements of how we visually perceive the world: how our brains perceive the size of objects that are nearer or farther away, and how far away we expect objects to be when they’re close to the horizon.

How do you find the scale model of the solar system?

To calculate the scale solar system, discuss proportions and ratios with students. The ratio of the scale diameter of a planet to its scale distance to the Sun is equal to the ratio of the actual diameter of the planet to the actual distance to the Sun.

## Why do you think the small ball used to represent the moon?

Pre-Lab Questions The larger foam ball represents Earth, while the smaller foam ball represents the moon. The moon reflects light from the sun, and because the moon is a sphere, light will only shine on parts of it at one time. The light areas are where the sun’s light hits the moon.

READ ALSO:   Was Napoleon influenced by Alexander the Great?

### What is the scale ratio of distance between Earth and our Moon?

The Earth is 12,740 km (7900 miles) across, and the Moon 3474 km (2150 miles) in diameter, for a ratio of 3.7.

#### What is the scale ratio between the Earth and Moon how many times larger is Earth )?

The moon is a bit more than one-fourth (27 percent) the size of Earth, a much larger ratio (1:4) than any other planets and their moons.