Everything

Question 1

How do we know if something is alive

Answer 1

growth, reproduction, movement, respiration, sensitivity, excretion, and nutrition

Question 2

Name all forces

Answer 2

Push
Pull
Magnetism
Gravity
Friction
Acceleration
Spring
Tension
Applied
Drag
Buoyan

Question 3

How do plants grow

Answer 3

Plants grow through photosynthesis, which is the process of converting light energy into chemical energy

Question 4

How do plants get poisoned

Answer 4

Poisoning occurs when plants absorb harmful chemicals from the soil or air

Question 5

What are the three laws of motion

Answer 5

In the first law, an object will not change its motion unless a force acts on it

In the second law, the force on an object is equal to its mass times its acceleration

In the third law, when two objects interact, they apply forces to each other of equal magnitude and opposite direction

Question 6

What can forces and stretches do

Answer 6

Forces can stretch or compress objects.

Question 7

What are moments

Answer 7

Moments are the turning effect of a force. Force x distance

Question 8

What is pressure

Answer 8

Pressure is the force exerted per unit area

Question 9

What are distance time graphs

Answer 9

Distance-time graphs show the distance traveled by an object over time.

Question 10

What is Terminal velocity

Answer 10

Terminal velocity is the maximum speed an object can reach while falling through a fluid

Question 11

Cell parts: + what are bacteria, viruses and fungi

Answer 11

Cells have many parts including the nucleus, cytoplasm, and cell membrane.
Bacteria / viruses / fungi / Disease: Bacteria, viruses, and fungi are microorganisms that can cause diseases

Question 12

What are antibiotics

Answer 12

Antibiotics are medicines that kill or stop the growth of bacteria.

Question 13

What is food preservation/ fermentation

Answer 13

Food preservation is the process of preventing food from spoiling. Fermentation is the process of converting sugar into alcohol or acid.

Question 14

What is photosynthesis

Answer 14

Photosynthesis is the process by which plants convert light energy into chemical energy

Question 15

What chemical test can you do for oxygen

Answer 15

Oxygen can be tested using a glowing splint.

Question 16

What is lift in aeroplanes

Answer 16

Lift is the force that keeps airplanes in the air.

Question 17

What is the ozone layer

Answer 17

The ozone layer is a layer of ozone gas in the Earth’s atmosphere that protects us from harmful UV rays

Question 18

What is water

Answer 18

Water is a colorless, odorless, and tasteless liquid that is essential for life

Question 19

What test can be done for water

Answer 19

Water can be tested using cobalt chloride paper.

Question 20

What test can be done for hydrogen

Answer 20

Hydrogen can be tested using a burning splint.

Question 21

What is respiration

Answer 21

Respiration is the process by which living things convert glucose into energy

Question 22

What is seed germination

Answer 22

Seed germination is the process by which a seed grows into a plant.

Question 23

What are sound waves

Answer 23

Sound waves are vibrations that travel through the air

Question 24

What are waves

Answer 24

Waves are disturbances that travel through a medium (object)

Question 25

What test can be done for carbon dioxide

Answer 25

Carbon dioxide can be tested using limewater

Question 26

What is white light reflection and what happens with it

Answer 26

White light is a combination of all colors in the visible spectrum.
When white light hits an object, it can be reflected, absorbed, or transmitted.
The color we perceive is determined by the wavelengths of light that are reflected by the object.

Question 27

How do we see objects

Answer 27

We see objects because light reflects off them and enters our eyes.
The reflected light enters the eye through the cornea, passes through the pupil, and gets focused by the lens onto the retina.
The retina contains light-sensitive cells called rods and cones that convert light into electrical signals, which are then sent to the brain for interpretation.

Question 28

what is Reflection/Refraction:

Answer 28

Reflection occurs when light bounces off a surface.
Refraction is the bending of light as it passes from one medium to another, due to a change in its speed.
These phenomena play a crucial role in the formation of images in mirrors, lenses, and other optical devices.

Question 29

Parts of the Eye:

Answer 29

Cornea: The transparent outer covering that protects the eye and helps focus incoming light.
Pupil: The adjustable opening in the center of the iris that controls the amount of light entering the eye.
Lens: A flexible structure that changes shape to focus light onto the retina.
Retina: The light-sensitive layer at the back of the eye that contains rods and cones.
Optic Nerve: Transmits visual information from the retina to the brain.

Question 30

Images in the Eye:

Answer 30

The lens of the eye focuses the incoming light onto the retina, forming an inverted image.
The retina then converts the light into electrical signals that are sent to the brain via the optic nerve.
The brain processes these signals and interprets them, resulting in the perception of a right-side-up image.

Question 31

Acids/Alkalis/Bases:

Answer 31

Acids are substances that release hydrogen ions (H+) in water and have a pH less than 7.
Alkalis (also called bases) are substances that release hydroxide ions (OH-) in water and have a pH greater than 7.
Acids and alkalis can react with each other to form water and a salt in a process called neutralization.

Question 32

pH Scale:

Answer 32

The pH scale is a measure of the acidity or alkalinity of a substance.
It ranges from 0 to 14, with 7 being neutral.
Values below 7 indicate acidity, with lower values being more acidic, while values above 7 indicate alkalinity, with higher values being more alkaline.

Question 33

Chromatography

Answer 33

Chromatography is a technique used to separate and analyze mixtures of substances based on their different solubilities and interactions with a stationary phase and a mobile phase.
It is commonly used in scientific research, forensics, and chemical analysis to identify components in a mixture.

Question 34

Chlorophyll:

Answer 34

Chlorophyll is a pigment found in the chloroplasts of plant cells and is responsible for capturing light energy during photosynthesis.
It absorbs red and blue light and reflects green light, which gives plants their characteristic green color.
Chlorophyll plays a vital role in converting light energy into chemical energy, enabling plants to produce glucose and oxygen through photosynthesis