Earth Science- lessons 1 and 2

Some stars can only be visible at the _______ during particular months of the year.

Ihe Sun appears to move from east to west across the sky. In reality, Earth is rotating from?

A sundial uses ______ to determine the time of day.

The relative position of the Moon, Earth, and Sun and the Sun’s reflection off the Moon

The Sun is the star at the ____ of our solar system.

Seasons are a result of what?

Earth's satellite, which reflects the Sun's light, is known as the ____.

________ is a spin around a center.

Earth’s ___ is an imaginary vertical line that runs from the North Pole to the South Pole.

At all times, half of Earth faces toward the Sun and half faces away from the Sun.

The power to do work is called...

The Sun is the largest star.

In comparison to other stars in the sky, the Sun appears brighter because it is-

The hottest star has a ____ color.

A giant ball of hot gas...

A recognizable group of objects or a series of events

_____are caused by something blocking the light.

In order to be classified as a planet, they need to have:

Not all planets rotate the same as Earth. Which planet has the slowest rotation?

________, on the other hand, rotates quite fast. One rotation is less than 10 hours on Earth.

Earth’s motion around the Sun; Earth takes year, or 365 days, to make a single ____.

The imaginary line on which Earth turns

How luminous something appears is called?

The moon is illuminated by the Sun.

True or false: A star's size and temperature determines a star's brightness.

A star’s _____ can tell scientists about its surface temperature.

Stars are held together and pulled together by __

Most meteroids that enter the Earth's atmosphere are about the size of a ___?

Before clocks were invented, people used the ______ to tell time.

During Earth’s rotation,the Sun’s light hits objects from different directions causing...

Its enormous _____ keeps the solar system in orbit.

Earth’s ____ is slightly tilted at an angle of 23.5°.

Early in the morning, the Sun appears low in the sky, by noon it is higher- why?

Earth's _____ has an elliptical path around the Sun.

______are instruments used by astronomers to help see objects in space.