Science-4th Qtr- Mr Sun, Sun. Mr. Golden Sun

Question 1

Is an important component of the Solar System. It is found at the center of the Solar System with the other planets moving around it.

Answer 1

Sun

Question 2

It has a powerful gravity that attracts all the other objects in the Solar System toward it. It is our daytime star and our source of heat and light.

Answer 2

Sun

Question 3

Composition of the sun. (elements)

Answer 3

70% hydrogen gas
28% helium gas
2% heavy elements such as carbon, iron, oxygen.

Question 4

NASA -stands for?

Answer 4

National Aeronautics and Space Administration (NASA)

Question 5

According to NASA the core of the sun has a temperature of _______.

Answer 5

15,600,000 degree celsius.

Question 6

It keeps the Solar System together. It attracts all objects to it and also the planets to one another.

Answer 6

gravity

Question 7

True or False: The diameter of the sun is about 1,390,000 km. It is about 9 times the diameter of Earth and about 330,000 times more massive than Earth.

Answer 7

True

Question 8

True or False: The sun is composed of the core, the radiation zone and the convection zone.

Answer 8

True

Question 9

Is the outermost layer of the sun’s interior.

Answer 9

convection zone

Question 10

Is a region between the core and the convection zone. Energy produced from the core travels outward through radiation.

Answer 10

radiation zone

Question 11

Is the innermost part of the sun. Enormous amount of energy is produced here.

Answer 11

core

Question 12

Due to its very high temperature hydrogen gases combine to form helium in a process called ______. This fuels the sun to produce heat and light energy.

Answer 12

nuclear fusion.

Question 13

The atmosphere of the sun consists of ______ and ______.

Answer 13

hydrogen
helium

Question 14

Is the inner layer of the sun’s atmosphere. The gases are thick enough to be seen. That is why it is the visible part of the sun.

Answer 14

photosphere

Question 15

Lies above the photosphere. It is the middle layer of the sun’s atmosphere.

Answer 15

chromosphere

Question 16

Is the outer part of the sun’s atmosphere. It can be seen during a total solar eclipse.

Answer 16

corona

Question 17

It is an instrument use by astronomers to observe the corona during a total solar eclipse.

Answer 17

coronagraph or coronameter

Question 18

True or False: The sun is a dynamic and active star.

Answer 18

True

Question 19

_____ are areas that are slightly cooler than other regions of the sun.

Answer 19

Sunspots

Question 20

The eruption of gases from the chromosphere is termed as _______.

Answer 20

prominence

Question 21

_____ are violent explosions on the sun’s atmosphere.

Answer 21

Solar flares

Question 22

The _______ comes from the sun and moves in all directions with the speed of 400 kilometers per second.

Answer 22

solar wind

Question 23

True or False: Solar flares can greatly increase the solar wind, which means that more particles reach the upper atmosphere of Earth.

Answer 23

True

Question 24

True or False: The sun is important to all living things on Earth.

Answer 24

True

Question 25

The _____ tells time depending on the position of the sun’s shadow during the day.

Answer 25

sundial

Question 26

True or False: The sun always rises in the east and sets in the west.

Answer 26

True

Question 27

True or False: During rainy days, mountain slopes become slippery and can be dangerous to mountaineers.

Answer 27

True

Question 28

What benefit does exposure to sunlight give you when doing physical and outdoor activities?

Answer 28

Sunlight activates vitamin D found in our skin. In turn, vitamin D helps in the absorption of calcium that makes the bones strong and hard.

Question 29

True or False: Too much exposure to sunlight may cause sunburn.

Answer 29

True

Question 30

How to prevent from getting a sunburn?

Answer 30

use an umbrella and apply sunblock to protect the skin from the harsh effects of ultraviolet rays

Question 31

A ____ is a change in the environment to which organisms respond in the different ways.

Answer 31

stimulus

Question 32

True or False: Too much heat causes dehydration.

Answer 32

True

Question 33

Some animals become inactive during long hot days is called?

Answer 33

destivation

Question 34

What happens when animals destivate?

Answer 34

Their breathing, heartbeat, and other body processes slow down. This lessens the need for water allowing these animals to survive despite the heat.

Question 35

True or False: Plants need energy from the sun to manufacture their own food or undergo photosynthesis.

Answer 35

True

Question 36

Is it true that solar batteries use light and heat from the sun?

Answer 36

Yes, true.

Question 37

How does solar technology works?

Answer 37

The energy from the sun is collected in solar panels to produce electrical energy.

Question 38

Give at least 5 ways to protect yourself from the harmful effects of the sun?

Answer 38

1. Avoid or limit your exposure to the strongest rays of sun. Strongest rays strike Earth at 10am to 4pm.
2. Apply sunblock or protective sunscreen before going out under the sun.
3. Shield your skin from UV rays by covering up with clothing, umbrella, or hats.
4. Protect the eyes by wearing sunglasses when expose to the sun.
5. Listen to weather forecasts and take note of the UV index.
6. Drink a lot of water.

Question 39

Measures the strength of ultraviolet (UV) radiation from the sun at a particular place and time.

Answer 39

UV index or ultraviolet index

Question 40

True or False: Water refreshes you and prevents dehydration.

Answer 40

True