2nd
Which is the largest land animal?
a. Lion
b. Tiger
c. Elephant
d. Rhinoceros
c. Elephant
When you push something, you apply ____.
a. Force
b. Acceleration
c. Mass
d. Compression
a. Force
What tissue connects muscles to bones?
a. Skin
b. Blood vessels
c. Fat
d. Tendon
d. Tendon
What are animals, which eat both plants and animals, called?
a. Herbivores
b. Insectivores
c. Carnivores
d. Omnivores
d. Omnivores
Which of these species is a producer?
Polar bear
Algae
Shrimp
Cod
Algae
___ helps pump blood through the entire body.
a. Lungs
b. Kidneys
c. Heart
d. Brain
c. Heart
Which group of animals have scales?
a. Mammals
b. Amphibians
c. Reptiles
c. Reptiles
Which nutrient plays an essential role in muscle-building?
a. Protein
b. Carbohydrate
c. Iron
d. Fat
a. Protein
Which cell organelle is also called the powerhouse of the cell?
a. Ribosome
b. Endoplasmic reticulum
c. Cytoplasm
d. Mitochondria
d. Mitochondria
Which of these food chains is in the right order?
Shrimp → algae → cod → seal → polar bear
Algae → cod → shrimp → seal → polar bear
Polar bear → seal → cod → shrimp → algae
Algae → shrimp → cod → seal → polar bear
Algae → shrimp → cod → seal → polar bear
How does a dog express happiness?
a. Twitching ears
b. Moving head
c. Closing eyes
d. Wagging tail
d. Wagging tail
Which material from the following has the highest transparency?
a. Paper
b. Wood
c. Metal
d. Glass
d. Glass
Which scientist proposed the three laws of motion?
a. Isaac Newton
b. Thomas Alva Edison
c. Albert Einstein
d. Stephen Hawking
a. Isaac Newton
The bending of light through a glass prism is called ____.
a. Reflection
b. Refraction
c. Diffraction
d. Absorption
b. Refraction
In a food web, green plants are known as producers. Why is this?
Because plants are not carnivores
Because plants are the most efficient at transferring energy
Because plants create their own food from sunlight
Because plants are inefficient at transferring energy
Because plants create their own food from sunlight
What are the three states of matter?
Solid, Liquid, and Gas
What part of the skeletal system protects the brain?
a. Spine
b. Thigh
c. Pelvis
d. Skull
d. Skull
Plants need which gas to perform photosynthesis?
a. Hydrogen
b. Carbon monoxide
c. Carbon dioxide
d. Oxygen
c. Carbon dioxide
A lion is most closely related to which of the following animals?
a. Dog
b. Raccoon
c. Wolf
d. Leopard
d. Leopard
What does a decomposer do in a food web?
They provide food for herbivores
They recycle nutrients by feeding on dead and decaying materials
They convert energy from sunlight into food
They create soil
They recycle nutrients by feeding on dead and decaying materials
Frog is a reptile or amphibian?
amphibian
Which pigment gives the leaves its green color?
Chlorophyll
Which system of the body controls the senses?
a. Circulatory system
b. Digestive system
c. Nervous system
d. Skeletal system
c. Nervous system
edicine that is given to fight bacteria but not viruses?
Antibiotic
Which of the following support all life on Earth?
Insects
Mammals
Carnivores
Green plants
Green plants