3RD GRADE SCIENCE
3RD GRADE SCIENCE
3RD GRADE SCIENCE
3RD GRADE SCIENCE
3RD GRADE SCIENCE
100

What is the purpose of the stem?

Provide the plant with support and carry minerals and water from roots

100

What do plants need to live?

Air, water, minerals, and sunlight

100

Why are leaves green?


Because of chlorophyll

100

What is the process called when living things create more of their own kind?

Reproduction

100

What is the main source of energy for Earth?


Sun

200

What type of animal is a frog?


amphibian

200

What type of rock forms when molten rock cools and hardens?

igneous

200

Which organ system transports oxygen and nutrients to body cells?


Circulatory system

200

What is the name of the energy that travels in waves and can be seen by our eyes?


Light energy

200

What term describes a plant or animal species that no longer exists anywhere on Earth?

Extinct

300

When light bends as it enters a different medium the process is known as what?

Refraction

300

Electric power is typically measured in what units?

Watts

300

Forces create what?



Motion

300

A push or pull is the definition of what?

Force

300

What kind of eclipse do we have when the moon is between the sun and the earth?


A solar eclipse

400

What is mass?

The amount of matter in an object

400

What is weight?



The force of gravity on an object

400

What 2 things cause erosion?

Wind or water

400

Why is it easier to slide your feet across ice than gravel?

Less friction

400

Which phase of matter will change shape but not size?

Liquid

500

What is connected to your bones to help them move?

Muscles

500

How many bones does an adult human have?

206

500

What is the human body's largest organ?

The skin

500

Which of the following organs is also a muscle?

The heart

500

Landforms are found on what layer of the Earth?


Crust

M
e
n
u