Based on the content of the Grade 4 Natural Science Test paper shown, here are the solutions to the questions.
Section A
1.
b) The gravitational pull of the moon
* *Reasoning:* The moon's gravity pulls on Earth's oceans, creating high and low tides.
2.
c) By making a model or scale replica
* *Reasoning:* Scientists often build models (like a solar system model) to study things that are too big or far away to see directly.
3.
a) By building a volcano model
* *Reasoning:* This is a practical way to investigate how volcanoes work safely in a classroom.
Section B
1.
The sun is a star. (Or: The sun provides light and heat / The sun is at the center of the solar system).
2.
The moon has craters. (Or: The moon reflects sunlight / The moon orbits the Earth).
3.
Jupiter, Saturn, Uranus, Neptune. (Any two of these gas giants).
4.
Mercury, Venus, Earth, Mars. (Any two of these rocky planets).
Section C
*Fill in the missing labels for the Moon Phases diagram:*
* Top image (dark circle):
New Moon
* Right image (half lit on right):
First Quarter
* Bottom image (fully lit):
Full Moon
* Left image (half lit on left):
Last Quarter (or Third Quarter)
Section D
1.
Why is the moon important?
* It causes ocean tides which help marine life.
* It lights up the night sky.
* It stabilizes Earth's wobble, keeping our climate steady.
2.
What is an eclipse?
* An eclipse happens when one space body moves into the shadow of another. For example, a solar eclipse is when the moon blocks the sun, and a lunar eclipse is when Earth blocks sunlight from reaching the moon.
3.
How do scientists believe the Wild Animals formed? *(Note: This question likely refers to "Wild Fires" or a specific text passage not fully visible, but based on standard Grade 4 science regarding Earth formation/events)*:
* *Correction/Refinement:* If this refers to the
Moon's formation (common in this unit), scientists believe a giant object hit Earth, and the debris formed the moon. If it refers to
Wildfires, they are often caused by lightning or humans. *Given the context of "Planet Earth & Beyond", this question might be a typo for "How did the Moon form?" or referring to a specific reading passage about natural disasters.*
Assuming standard curriculum: Scientists believe the Moon formed when a Mars-sized object crashed into Earth billions of years ago.
4.
How is the moon seen in Native American stories?
* In many Native American stories, the moon is seen as a spirit, a grandmother, or a protector who watches over the Earth and animals at night.
5.
What do the moon's changing phases mean?
* The phases show the moon's cycle as it orbits Earth. They mark the passing of time (about a month) and were used by ancient people to create calendars for planting and hunting.
6.
What do ancient rock beliefs about the moon reveal?
* They reveal that ancient people respected the moon and thought it had special powers or was a god. It shows they were careful observers of the sky long before modern telescopes existed.
Final Answer:
Section A: 1(b), 2(c), 3(a)
Section B: 1. Star/Center of solar system; 2. Craters/Reflects light; 3. Jupiter/Saturn; 4. Mercury/Venus
Section C: New Moon, First Quarter, Full Moon, Last Quarter
Section D: 1. Tides/Light; 2. Shadow of one body on another; 3. Giant impact theory (for Moon) or Lightning/Humans (for Fire); 4. Spirit/Grandmother; 5. Monthly cycle/Timekeeping; 6. Ancient respect/Observation skills
Parent Tip: Review the logic above to help your child master the concept of gr 4 science worksheet.
