Physics4 8L Earth in space Flashcards Preview

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Flashcards in Physics4 8L Earth in space Deck (36)
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1

Which statement is true?
A In Britain we get more daylight in summer and less in winter.
B Daylight and night are the same length in summer and winter.
C We get less daylight in summer and more in winter.
D We get most daylight in the spring.

A In Britain we get more daylight in summer and less in winter.

2

What s is the shape of the Earth?

A sphere 

3

What o is the name given to the elliptical path taken taken by a planet around the sun?

Orbit

4

Why can't we see a new moon?

The lit side of the Moon is facing away from the Earth.

5

Stars are:
A lumps of hot rock in space.
B huge balls of burning gas, like the Sun.
C balls of burning gas, like the Moon.
D all very close to the Earth.

B huge balls of burning gas, like the Sun.

6

Which list shows things in order of size, starting with the smallest?
A galaxy, star, planet
B planet, star, galaxy
C star, planet, galaxy
D star, galaxy, planet

B planet, star, galaxy

7

Where does the force of gravity on Earth pull or push you?

It pulls you towards the centre of the Earth.

8

Gravity:
A gets less if two objects get closer together.
B gets stronger if two objects get further apart.
C gets less if two objects get further apart.
D does not depend on distance

C gets less if two objects get further apart.

9

What is the equation to calculate weight?

Weight = mass x gravity

10

A solar system is.....

......a star with planets and other objects orbiting around it.

11

The planets stay in their orbits around the Sun because of:
A the gravity of the Moon.
B the gravity of the Sun.
C magnetism.
D the gravity pull of the Earth.

B the gravity of the Sun.

12

What did Ptolemy say about the universe?

He said that the Earth was at the centre and everything else moved around it.

13

Why did ancient people realise that the Earth was not flat?

They watched ships approaching their shores. The flag at the top of the mast appeared first, then more and more mast, then the hull.

14

Which is the best description of a constellation?
A a group of stars that appear to be close to one another when we look at them.
B millions of stars that form a spiral shape
C a group of stars that are only a few light years from each other
D lines in the sky that join stars to each other

 

A a group of stars that appear to be close to one another when we look at them.

15

Why do we have a day and a night?

We have day and night because the Earth spins on its axis and half of the Earth is in sunlight and half in shade at any time.

16

Why do we see different phases of the moon on Earth?

The moon orbits the Earth and the half of the moon which faces the sun is lit up.

Only the lit part of the moon can be seen from Earth and this changes shape from night to night as the moon orbits the Earth.

17

The Earth’s north magnetic pole is:
A near the North pole.
B near the South pole.
C at the South pole.
D at the North pole.

A near the North pole.

18

Why do we believe that our current model of the Solar System is correct?
A We can see the elliptical orbits.
B It can accurately predict the movements of the planets.
C It agrees with religious ideas.
D We have sent people to visit the Moon.

B It can accurately predict the movements of the planets

19

Why do astronomers use light years?

The distances in space are huge and so very long numbers are needed for distances. Using light years makes these shorter (the numbers have fewer zeros!)

20

Which statement best describes our current ideas about the Solar System?
A The planets all move in circular orbits around the Earth.
B The planets all move in circular orbits around the Sun.
C The planets all move in elliptical orbits around the Sun.
D The planets all move in elliptical orbits around the Earth.

 

C The planets all move in elliptical orbits around the Sun.

21

We have different seasons during the year because:
A the Earth’s axis is tilted.
B the Moon moves around the Earth.
C the Sun moves around the Earth.
D there are 12 months in the year.

A the Earth’s axis is tilted.

22

Which statement is not true?
A The Earth attracts objects because it has a large mass.
B You are attracting this quiz paper with a small force of gravity.
C Only large objects like the Earth produce a force of gravity.
D Your body is attracting the Earth.

C Only large objects like the Earth produce a force of gravity.

23

What is a moon?

A rock which orbits a planet.

24

A bag of sugar has a mass of 1 kg. What is its weight on Earth?
A 1 N
C 10 kg
B 10 N
D 0.1 N

B 10 N

25

Why is the length of day different at different times of the year? 

The Earths axis is tilted. 

26

The Sun feels warmer in summer because:
A the Earth is closer to the Sun.
B the Earth is further away from the Sun.
C the Sun’s rays are more concentrated.
D the Sun’s rays are more spread out.

C the Sun’s rays are more concentrated.

27

How long does it take the Earth to go around the Sun once?

365.25 days ( but 365 is fine as an answer!)

28

The Sun at midday:
A is highest in the spring.
B is highest in the summer.
C is highest in the autumn.
D is highest in the winter.

B is highest in the summer.

29

What p was classed as a planet until 2006 but is now known as a dwarf planet?

Pluto.

30

The Sun rises and sets every day because:
A the Sun moves around the Earth.
B the Earth moves around the Sun.
C the Earth spins on its axis once every 12 hours.
D the Earth spins on its axis once every 24 hours.
 

D the Earth spins on its axis once every 24 hours.