Importance of 7th Grade Science Questions Answers

For the students of 7th grade, the subject of science is equally important as any other subject matter.Science is a major contributor to the development of human civilization. We have science around us, we are eating, breathing, running, Behind these actions, the principles of science are working somewhere. Modern human society is completely different from the ancient times of human society! The revolutionary changes are seen in his lifestyle, clothing and circumstances. In the past few decades, there has been a transformation of man’s life. The conversion of this transformation or change of this change goes to science itself.

Science Fair Questions for 7th Grade

If we call the modern era of science the era of science, it will never be exaggerated, but the above statement will be absolutely appropriate considering the present environment. With the help of science, the importance of time and distance has diminished today. Today, a man sitting thousands of miles can talk to his friends and relatives in such a way as to be sitting in front. Such fast-moving aircraft and air buses. Train, motor, tram, ship, scooter etc. come to the facility. Teleprinter, telephone, television have proved to be a great tool for humans. With the help of science, news can be delivered from one place to another at an early location at a quick time.

Science Questions and Answers for 7th Grade

Qus: In a food chain, which are the most efficient users of
solar energy?
A. Carnivores
B. Herbivores
C. Parasites
D. Omnivores
Ans: Herbivores

Qus: Green plants are important to animals because the plants.
A. Consume food and give off carbon dioxide
B. Produce food and give off oxygen
C. Consume food and give off oxygen
D. Produce food and give off carbon dioxide
Ans: Produce food and give off oxygen

Qus: Snakes feed on mice. The mice eat grain crops. When the crops are plentiful, what will happen?
A. The snake population will increase
B. The snake population will decrease
C. The mouse population will decrease
D. The mouse population will not change
Ans: The snake population will increase

Qus: Which of the following is the most likely cause of winds to blow?
A. The uneven heating of the Earth
B. The rotation of the Earth
C. The condensation of the air
D. The position of the moon
Ans: The uneven heating of the Earth

Qus: Where would rainy, unsettled weather most likely form?
A. In the middle of a warm air mass
B. At a front, where two air masses meet
C. In the middle of a cold air mass
D. At a place without an air mass
Ans: At a front, where two air masses meet

Qus: Where do hurricanes form?
A. Over a desert
B. Over the ocean
C. Over lakes and rivers
D. In the middle of a cold air mass
Ans: Over the ocean

Qus: Temperatures on the Moon range from over 100 °C when the Sun shines to less than 115 °C below zero at night! Why are Earth’s temperatures more moderate than the Moon’s temperatures?
A. The Earth’s atmosphere acts as a blanket & the Moon lacks an atmosphere
B. The Moon is much flatter & more rocky than the Earth
C. The Earth is farther away from the Sun
D. The Earth’s oceans help moderate the temperatures & the Moon doesn’t have large bodies of water (
Ans: The Earth’s atmosphere acts as a blanket & the Moon lacks an atmosphere

Qus: A violent, whirling wind that moves across the ground in a narrow path is known as a?
A. Tornado
B. Water Spout
C. Hurricane
D. Blizzard
Ans: Tornado

Science Fair project Questions for 7th Grade

Qus: The energy you get during respiration is needed for what three things?
A. Growth, repair, movement
B. Growth, new cells, air
C. New muscles, new cells, movement
Ans: Growth, repair, movement

Qus: What two things are bi-products of respiration? These two things need to be excreted.
A. Water and carbon dioxide
B. Water and oxygen
C. Carbon dioxide and oxygen
Ans: Water and carbon dioxide

Qus: All vertebrate animals that live on land have
A. Gills
B. Lungs
C. Oxygen
D. None of these
Ans: Lungs

Qus: When we breathe in, the muscle below the rib cage is pulled down, and air gets sucked into the rib cage, filling the lungs. What is this muscle called?
A. Stomach
B. Lung
C. Diaphragm
D. None of these
Ans: Diaphragm

Qus: Which of the following animals take in more oxygen per breath than other animals?
A. Rabbits
B. Elephants
C. Birds
D. None of these
Ans: Birds

Qus: What animal does not have lungs?
A. Toads
B. Frogs
C. Fish
D. None of these
Ans: Fish

Qus: How many lungs do humans have?
A. 2
B. 1
C. 3
D. 4
Ans: 2

7th Grade Science Fair project Questions

Qus: Does the Sun play a role in Earth’s water cycle? If yes, what is that role?
A. Yes, the Sun heats clouds to trigger precipitation
B. No, the Sun has no role in the water cycle
C. Yes, the Sun provides the energy for water to evaporate
D. Yes, the Sun heats the air to form clouds
Ans: Yes, the Sun provides the energy for water to evaporate

Qus: Why is the ozone layer important for life on Earth?
A. Ozone takes up carbon dioxide
B. Ozone screens away harmful radiation from the Sun
C. Animals can only breathe oxygen in the ozone form
D. Plants take in ozone as part of photosynthesis
Ans: Ozone screens away harmful radiation from the Sun

Qus: The movement of winds during the day from the sea to the land is known as a?
A. Valley Breeze
B. Sea Breeze
C. Global Wind
D. Land Breeze
Ans: Sea Breeze

Qus: Which part of the water cycle is the same part that causes dew in the mornings?
A. Transpiration
B. Condensation
C. Precipitation
D. Evaporation
Ans: Condensation

Qus:In the process of photosynthesis, what represents food energy made by the plant?
A. Carbon Dioxide
B. Sun
C. Glucose
D. Water
Ans: Glucose

Qus: A “Triple Beam Balance” would be the best tool for measuring which of the following?
A. The length of a stick
B. The mass of a rock
C. The texture of soil
D. The color of a leaf
Ans: The mass of a rock

Qus: Acids are found in many common chemicals, including foods. Acids taste-
A. Soapy
B. Sweet
C. Sour
D. Salty
Ans: Sour

Qus: When wind blows, the most likely cause is?
A. Uneven heating of the Earth
B. Humidity of the air
C. Changing phases of the moon
D. Changing distance between the Sun and the Earth
Ans: Uneven heating of the Earth

Qus: Morning dew is an example of which portion of the water cycle?
A. Evaporation
B. Precipitation
C. Condensation
D. Transpiration
Ans: Condensation

Qus: You find an igneous rock that contains large crystals. This means
A. Slow cooling produced the rock
B. Large crystals indicate how long ago the rock formed
C. Slow cooling produced the rock
D. Large crystals indicate the source of the rock
Ans: Slow cooling produced the rock

7th Grade Science Fair Questions

Qus: The preserved remains of once-living organisms are called
A. Geodes
B. Mitochondria
C. Meteorites
D. Fossils
Ans: Fossils

Qus: The probability of producing a tall plant from two hybrid tall plants is?
A. 50%
B. 0%
C. 75%
D. 100%
Ans: 75%

Qus: Which of these diseases is not caused by improper disposal of sewage?
A. Cholera
B. Jaundice
C. Heart Attack
D. Typhoid
Ans: Heart Attack

Qus: Mirror used for side view in vehicles?
Ans: Convex , Convex Mirrors

Qus: Based on which of the following changes is an indicator useful?
A. Physical state
B. Pressure
C. Colour
D. Temperature
Ans: Colour

Qus: What are the products of anaerobic respiration in yeast?
A. Carbon dioxide and glucose
B. Glucose and oxygen
C. Alchol and Carbon dioxide
D. Oxygen and alchol
Ans: Alchol and Carbon dioxide

Qus: Which of the following instruments is used to check temperature
A. Voltmeter
B. Speedometer
C. Thermometer
D. Barometer
Ans: Thermometer

Qus: All animals respire. Respiration is what?
A. Breathing
B. Chemical reaction
C. Sweating
D. Coughing
Ans: Chemical reaction

Qus: During normal human respiration, glucose reacts with ___________ to produce energy.
A. Oxygen
B. Nitrogen
C. Blood
Ans: Oxygen