Earth in Space

Question 1

Earth

Answer 1

a planet that orbits the Sun because of the force of gravity between the two.

Question 2

Solar System

Answer 2

the system of objects which are controlled by the sun

Question 3

Day lengths on other planets

Answer 3

Venus - 243 Earth days
Jupiter - 10 hrs

Question 4

How many moon cycles are there in one Earth year

Answer 4

12 or 13

Question 5

Why do some planets have longer years

Answer 5

Planets orbit farther from the Sun than Earth because they have a bigger circumference to go around

Question 6

A year on Venus

Answer 6

225 Earth days

Question 7

A year on Jupiter

Answer 7

12 Earth years

Question 8

What axis tilt does Earth rotate with?

Answer 8

23.5 degrees

Question 9

What happens in June?

Answer 9

northern hemisphere is tilted towards the Sun, gets more heat energy from the Sun, lighter for longer time.

Question 10

What happens in December?

Answer 10

the northern hemisphere is tilted away from the Sun, lighter for a shorter time

Question 11

Why do we get 4 seasons

Answer 11

Because of the way the Earth rotates

Question 12

Why do we get well defined shadows on a sunny day?

Answer 12

Because there is direct light

Question 13

what would happen to the length of the shadow in the afternoon hours

Answer 13

The length of the shadow decreases in the afternoon as the sun rises higher in the sky.

Question 14

What does the torch experiment prove about the path light travels?

Answer 14

That light travels in straight lines

Question 15

How could light be seen through all the index cards

Answer 15

The holes are lined up, and the light travels in a straight line.

Question 16

What would happen if the holes were smaller

Answer 16

If the holes were smaller, less light would pass through, making it harder to see through the index cards.

Question 17

What do we use to measure the universe

Answer 17

light years (l.y.)

Question 18

Why have we not sent a probe/person to Proxima Centauri yet?

Answer 18

The long distances and harsh conditions of space between stars create tough challenges.

Question 19

position of the sun in the sky during summer

Answer 19

the sun rises in the east and sets in the west (high in the sky)

Question 20

position of the sun in the sky during winter

Answer 20

the sun rises in the east and sets in the west (low in the sky)

Question 21

Refractor Telescope

Answer 21

A bigger lense lets you get more light, making the image clearer

Question 22

Advantage of an earth-based telescope

Answer 22

cheaper, easier to build, easier to fix

Question 23

Disadvantage of an earth-based telescope

Answer 23

atmosphere interferes with the light

Question 24

Advantage of an in orbit telescope

Answer 24

avoid many problems with the atmosphere, see all wavelengths of life, see things clearer

Question 25

Disadvantage of an in orbit telescope

Answer 25

more expensive, harder to fix

Question 26

Big Bang Theory

Answer 26

scientific explanation that the universe began from a hot, dense state

Question 26

Red shift

Answer 26

when light from a star stretches and appears more red as it moves away

Question 27

flyby space probe

Answer 27

zooms past a planet or moon to take pictures and gather information

Question 28

impactor space probe

Answer 28

robot that flies into a comet or asteroid to study it by hitting it

Question 29

orbiter space probe

Answer 29

a robot that flies around a planet to take pictures and learn about it.

Question 30

lander space probe

Answer 30

a robot that lands on a planet or moon to study it.

Question 31

why does mercury only have 2 successful probes

Answer 31

it takes more energy to go there because it orbits fast

Question 32

stages of a low mass star (in order)

Answer 32

nebula, protostar, main sequence, red giant, planetary nebula, white dwarf,

Question 32

what 4 things do you want to measure on a lander mission and why

Answer 32

Temperature: To see how hot or cold the surface is and if it can support life
Soil: To know what the ground is made of and if it has water or nutrients.
Air:To check if there is any air to breathe or if it is safe to explore.
Rock Samples: To understand the history of the place and if it has interesting stuff to study.

Question 33

2 advantages of sending a probe to Neptune over sending a manned mission

Answer 33

can go to Neptune safely without putting people in danger, can work for a long time and send back lots of data.