Space - Yr 7 Flashcards
What is a planet?
An object that orbits a star
What is the star called in our solar system?
The sun
Name the planets in our Solar system
Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune
How many days are in a year?
365.25 days
How would you define a day?
A full rotation of the Earth on it’s axis
How do we get seasons?
The Earth is tilted on it’s axis pointing towards the Sun. When the Northern Hemisphere points to the sun, it experiences summer and it’s the opposite for the Southern Hemisphere. When the Southern Hemisphere points towards the sun, it’s flipped.
What is a galaxy
A large collection of stars
What galaxy are we in?
The Milky Way
What is a light year?
The distance light travels in a year
If my mass was 40kg on Earth what is my mass on Mars?
40kg/same
If my mass was 57kg on Mercury What would it be on Mars?
57kg/same
If my weight was 500 N on Earth would I weigh less or more on Jupiter
More
If my mass was 100 N on Saturn, would I weigh more or less on Venus?
Less
What causes years?
Gravitational force of the Sun on the Earth
What is a year
The time when the Earth does a complete orbit of the Sun
What are the four gaseous planets
Jupiter, Saturn, Uranus, Neptune
Which four planets are rocky?
Earth, Mercury, Venus, Mars
_______ are large objects that orbit the sun
Planets
The force of _________ keeps the planets orbiting around the sun
Gravity
Most of the planets have _______ that orbit around them
Moons
________ and __________ are smaller objects that orbit around the sun
Asteroids, Comets
What is Mass?
Amount of matter
What is weight?
Gravitational force acting on mass