Science

Question 1

Contrast planet to a star

Answer 1

Planets are celestial bodies that orbit around the sun. Planets don’t have the ability to emit light and energy from nuclear fusions.
Stars are huge celestial bodies made up of helium and hydrogen. Stars produce light and energy from their nuclear fusion.

Question 2

define celestial objects and examples of some

Answer 2

Clestial objects are celestial bodies in space such as the moons, suns, and planets.

Question 3

define stars

Answer 3

Stars are massive burning balls of hydrogen gas.
Hydrogen comes from nuclear explosions.
A type of nuclear reaction called a fusion reaction converts hydrogen into helium.

Question 4

how do we know the earth moves around the sun

Answer 4

Gravity holds the plantes all in orbit
The larger the mass the more gravitational force
Orbit is the pathway that celestial objects have around the sun

Question 5

Define the moon

Answer 5

When it is visible the moon is the biggest and brightest object in the night sky.
The moon doesn’t make its own light but acts like a giant mirror reflecting sunlight down to Earth, this is the light we see.
The moon also has different phases.

Question 6

Draw diagram of moon phases

Question 7

Define craters

Answer 7

A crater isa bowl-shaped depression, or hollowed-out area, produced by the impact of a meteorite other kinds of rocks
and are produced by the impact of a meteorite or an explosion.

Question 8

Mily way

Answer 8

The Milky Way is a huge collection of stars, dust and gas.

Question 9

planets

Answer 9

Planets are very different from stars - they are balls of rock or gas that orbit (move around) the sun.
There are no nuclear explosions on the planets so they do not create their own light. Instead, they reflect light falling on them from the sun allowing us to see them.

Question 10

constelations

Answer 10

stars and grouped them together in different ways.
These patterns are known as constellations.
Constellations are a group of stars that form a particular shape in the sky and have been given a name.

Question 11

geonectric

Answer 11

Geocentric
Earth is at the centre of the solar system
Aristotle

Question 12

Heliocentric

Answer 12

Sun is at the Centre of the solar system

Question 13

Lunar eclipse

Answer 13

During a lunar eclipse, the Earth blocks light from reaching the moon. Where as a solar eclipse occurs whenever light from the sun is blocked by the moon, casting a shadow onto Earth.

Question 14

solar eclipse

Answer 14

solar eclipse occurs when the Moon passes between Earth and the Sun, thereby obscuring the view of the Sun from a small part of Earth, totally or partially.

Question 15

gravity

Answer 15

Gravity is force caused by mass – the bigger the mass the stronger its gravitational field and the more it attracts other masses nearby.

Question 16

orbits

Answer 16

an orbit is the pathway a panets, moon and stars take in a countiunes path.

Question 17

tides

Answer 17

Tides are caused by the moon’s gravity.
becasue the moon isnt big enough the pull the earth instead it pulls the water creating buldges

Question 18

seasons

Answer 18

As the Earth revolves around the sun and spins about its axis it does so at an angle.
Earth’s axis is not vertical, instead it tilts at an angle of 23.5°
This tilt gives us our seasons, summer, autumn, winter and spring.

Question 19

asteroid

Answer 19

primarly composed of dust rock and metal

Question 20

meteoroid

Question 21

meteorite