Stars are spheres of gas that give off ___________ and ___________. (2 things)
heat and light
Planets in our solar system orbit the ______________.
sun
The force of attraction between any two objects is called ___________________.
gravity
When the moon appears completely dark with no lit part visible from Earth, it is called ________.
new moon
The path one object takes around another object.
orbit
The __________ is the largest star in our solar system.
sun
Our Earth orbits the sun in an elliptical circle. What is one pattern that occurs because of this phenomenon?
4 seasons
Earth's gravity pulls objects toward its __________.
center
If you threw a ball up on the Moon, it would go up how many times higher than on Earth?
6x because the gravity of the moon is 1/6 of the Earth's gravity.
Earth completes one full ____________ on its axis every 24 hours.
rotation
What affects the apparent brightness of a star?
The size of the star
The distance of the star from Earth
light-years
Gravity pulls water in which direction?
Toward the Earth's center (downward).
What force causes the rise and fall of tides?
Gravity.
The moon's gravity pulls on Earth's oceans.
What is the reason why we do not feel Earth move?
We move with Earth as it rotates.
Stars appear to change positions in the sky because or the Earth's ________ and _________.
rotation and revolution
A mixture of frozen gases, ice, dust, and rock that orbits the Sun is called?
comet
a large, frozen ball of ice, rock, dust that orbits the sun
A chunk of rock from space that travels through Earth's atmosphere (pulled in by gravity) is called a ______.
meteoroid
When the lit part of the Moon grows larger, it is in the ______________ phase.
waxing
The position of the sun in the sky.
As the Earth rotates on its axis, the sun appears to be moving in the sky.
What color of star is the coolest?
red
How do space rocks become meteors and meteorites?
A space rock is a meteoroid. If gravity pulls it toward Earth and it hits Earth, it becomes a meteorite. If it burns up due to friction, it is a meteor, causing a streak of light.
What should be the most likely outcome of a meteorite's encounter with Earth?
a crater
When Earth is facing the moon, the water levels
RISE
or
FALL?
rise
The tilt of the Earth's ____________ affects the seasons.
axis